The structure of wood, the structure of wood, what is the structure of wood

The structure of wood is naturally formed during the growth of trees, and its common characteristics and organizational structure can be analyzed from the longitudinal and cross-sections of the trunk.

The cross-section of the harvested trees is irregular and circular, and the arrangement of the bark, cambium, growth rings, pith core, and pith line can be clearly seen. In the processing and utilization, the wood that relies on the core part of the pith is called heartwood, the wood that relies on the bark part is called sapwood, and the middle part of heartwood and sapwood is called medium wood. And the best part of the material is the medium part.

The bark, cambium, growth rings, and pith can also be seen in the longitudinal section of the tree after harvesting. In the processing and utilization, the part that leans on the treetop is called the tip wood, the root part is called the root wood, and the middle part of the tip wood and the root wood is called the middle wood. If the stump or plank is sawn in sections, the wood is often divided into roots and shoots, and the longitudinal section is still made of medium wood.

Formula: The wood should be distinguished, and the cross-section has a name.

Cross-section of the core, sides and timber, longitudinal truncation of the timber and roots.

The bark growth rings are cambiated, and the medullary line of the heart is regular.

Characteristic mantra of each part of the wood:

Trees are harvested in winter and spring, and the bark should not be peeled off early.

At the end of the peeling and sawing sheet, it is naturally dried and stored.

Heartwood, medium wood, sapwood formula:

The heartwood sapwood should be distinguished, the wood of the medium wood is the most moderate, the heartwood is often cracked, the sapwood is curved, and the materials are used together.

Tip wood, medium wood, root wood formula:

The position of the shoot, middle and root timber is divided, the vertical and horizontal timber are moderate, the root timber is easy to crack and the material is coarse and heavy, and the tip timber is easy to bend and light.

The tips of the wood are empty to the end, and the root rot is mostly a three-foot "hole".

A thorough and detailed structural analysis of the trunk after harvesting can give a good grasp of its characteristics and enable more rational use.

Wood is a natural material that is made up of the main components of trees. Its construction can be divided into the following parts:

Cell wall: The cell wall of wood is made up of organic substances such as cellulose, hemicellulose, and lignin. These substances give strength and durability to the wood.

Fibers: The fibers of wood are long, thin cell walls made up of cellulose that are responsible for providing strength and rigidity to wood.

Vascular tissue: The vascular tissues in wood include xylem and phloem. Xylem is mainly composed of wood fibers and lignin, which is responsible for the transport of water and nutrients. The phloem is responsible for transporting organic matter.

Growth rings: The growth rings of wood are made up of growth rings and sapwood. The growth ring is formed by the spring and summer wood of the year and has a wider cell wall and a darker color. Sapwood is the outer layer of growth rings that has a narrower cell wall and a lighter color.

Voids: There are voids between the cells in the wood, which are called the pores of the wood. These pores can affect the quality and properties of wood, such as density, water absorption, and air permeability.

The structure of timber is: timber (single structure) timber (left and right structure).

The structure of timber is: timber (single structure) timber (left and right structure). Pinyin is: mùcái. Zhuyin is: Part of speech is: noun.

What is the specific explanation of wood, we will introduce it to you through the following aspects:

1. Explanation of terms [click here to view the details of the plan].

Wood mùcái. (1) Trunks or large branches that have undergone preliminary processing after felling.

2. Citations and Explanations.

After the trees are fell, they are preliminarily processed and can be used as materials for construction and the manufacture of utensils. Quote from "Zhou Li, Local Officials, and Commissioners": "The funeral discipline shares its salary and steamed wood, and the military shares its commission salary."

Guo Moruo's "Boyhood" Part 1 3: "Secondly, layer by layer, use large stones, fine stones, wood, tile powder, etc. to enrich the pit." ”

3. Chinese dictionary.

Truncated firewood. It is a material for construction and the manufacture of utensils. Translation of the word English wood, German, holz (bio), French bois

Fourth, the Internet explains the celebration shout.

Wood (lignified tissue of plants)Wood is the lignified tissue formed by plants that can grow secondarily, such as trees and shrubs. After the end of primary growth in these plants, the vascular cambium in the rhizome begins to move, developing bast outward and wood inward. Wood is a general term for plant tissues that develop inward from the vascular cambium, including xylem and parenchyma.

Wood plays a great supporting role in human life. Depending on the different properties of wood, people use them in different ways.

Synonyms about wood.

Firewood and timber. Verses about wood.

The woods roar like a collapse, you spit the fragrance of the wood, the old springs, the three peaks, and the rotten wood.

Words about wood.

lumberprimetimberwood

Idioms about wood.

Loose wood is not wood, thin and decaying wood, soldier training, oak, mediocre wood, wood and beams, wood, wood brain, educating talents, and simple materials.

Words about wood.

Measure and recruit materials, train soldiers, and use Chu materials to educate people, oak trees, thin and declining talents, outstanding pillars, and sparse ambitions.

Sentence formation about wood.

1. The chemical background of Yangbi bubble walnut shell as a raw material for wood adhesive.

2. This year's timber business is sluggish.

3. "We were in this workshop, when we came to ship restoration, it was convenient to sit on one side that was a pen-shaped groove class of wood together," Jones said.

4. As we all know, wood is easy to decay.

5. There are a lot of unprocessed wood in the factory.

The characteristics of wood structure include high stability, fire performance, good slag trapping, and good sound insulation.

1. High stability.

Wood has strong toughness compared to other materials, and together with the panel structure system, it has strong resistance to impact loads and periodic fatigue failure, and has the best seismic resistance.

Timber structures exhibit excellent stability and structural integrity under a variety of extreme conditions, especially in tropical regions that are prone to hurricanes and areas that are hit by destructive events, such as Japan and North America.

2. Fire performance.

Timber systems are much more fire-resistant than is often assumed, and can be protected by the plasterboard covering of wood elements in lightweight timber structures and the carbonization layer formed by fire in heavy timber structures. Liang Heng.

And to maintain its structural strength and integrity, the timber structure building designed and built in accordance with the Chinese timber structure design code can fully meet the relevant fire protection requirements.

3. Sound insulation performance.

Low-density and porous timber-based structures, as well as soundproof wall and floor systems, make timber structures suitable for buildings with soundproofing requirements, creating quiet living and working spaces. In addition, timber buildings do not have the percussive noise transmission problems that are common with concrete buildings.

Summary. Pro, hello what kind of wood is used for wood structure, pro, it is best to use fir 1, fir (shan) wood. It is mostly used for pillars, trusses, rafters, lookout boards, friezes, and lookout strips in the wooden structure of halls and pavilions.

The corrosion resistance and compressive performance of fir are stable, not easy to be eaten by insects, and the wood is light in weight and not easy to deform, it is an ideal building material, the rigidity of the compressive wrist force is very good, and the seismic performance is also good. 2. Loose. It is not widely used in ancient buildings, - general columns, sorghum, fangs, trusses, etc. do not use pine, its hardness is better than fir wood, but the anti-corrosion and insect resistance is not as good as fir wood, and the deflection of pine wood is larger, easy to crack and deform, and there is a problem of oil seepage in the future if the oil bag is not handled well.

Pine wood is used only when the cost is overly considered, but it needs to be used after taking anti-corrosion and insect control measures. It is often used on some straw trellis and some bent rafters and straw lookout boards in some pavilions. 3. Corn and beech.

These two kinds are tough wood, which are often used in ancient buildings to make some load-bearing frameworks, such as the riding door beams in the opening, the deep beams, the flower basket beams and corner beam pads of the flower basket hall, and the wooden tips of the column eye door.

Pro, hello what kind of wood is used for wood structure, pro, it is best to use fir 1, fir (shan) wood. It is mostly used for columns, trusses, rafters, lookout lintels, and seepage strips in the wooden structure of halls and pavilions. The anti-corrosion performance and compressive performance of fir are stable, not easy to be eaten by insects, and the wood is light and not easy to deform, it is an ideal building material, the rigidity of the compressive wrist force is very good, and the seismic performance is also good.

2. Loose. It is not widely used in ancient buildings, - general columns, sorghum, fangs, trusses, etc. do not use pine rock wood, its hardness is better than fir wood, but the anti-corrosion and insect resistance is not as good as fir wood, plus the deflection of pine wood is larger, easy to crack and deform, and there is a problem of oil seepage in the future if the oil bag is not handled well. Pine wood is used only when the cost is overly considered, but it needs to be used after taking anti-corrosion and insect control measures.

It is often used on some straw trellis and some bent rafters and straw lookout boards in some pavilions. 3. Corn and beech. These two kinds are tough wood, which are often used in ancient buildings to make some load-bearing frameworks, such as the riding door beams in the opening, the deep beams, the flower basket beams and corner beam pads of the flower basket hall, and the wooden tips of the column eye door.

Are the Wood Construction and Materials and Wood Science and Engineering (Wood Construction) the same major?

Dear, there is no such specialty. There are two types of timber construction: traditional timber structure and modern timber structure. The traditional wooden structure belongs to the ancient building, and the design office of the ancient building is generally very Xintong.

The modern wood structure is very narrow in the domestic application scene, the fire level is very low but the cost is not low, the high-grade building is too poor to use the slippery Qingtan, and the low-grade is not worth using, so there are few domestic uses.

The structure of wood is: wood (monolithic structure) head (monolithic structure).

The structure of wood is: wood (monolithic structure) head (monolithic structure). Pinyin is: mù tou. The part of speech is: noun. The phonetic pronunciation is:

The specific explanation of wood is what the seepage key, we will introduce it to you through the following aspects:

1. Explanation of terms [click here to view the details of the plan].

Wood mùtou. (1) A general term for felled trees.

2. Citations and Explanations.

Scale name. Ancient craftsmen measured timber and felled wood, and it was named after the degree of human head. See Qing Guifu's "Zapu Wood".

Quoting "Zhou Li, Examination of Work, Car Man" "Half Moment is Xuan" Han Zhengxuan's note: "Half a moment, one of three inches and three inches, the length of the head, and the wood of Ke Fan is named Yan." A general term for timber and lumber.

Quoting the poem "Five Crowns Mountain" by Li Qixian of Liao: "The wood is carved as a small Tang chicken, and the son comes to the wall to perch." "The eleventh chapter of "Dream of Red Mansions":

You Shi said: "I have also secretly asked people to prepare. It's just that the thing is not good wood.

The sixth chapter of "The Legend of Children's Heroes": "A marble hit the pillar of the hall on the east side, and with a tart, it hit an inch deep, and it went in and embedded it in the wood." It is used as a metaphor for people who are sluggish and inflexible.

Quoting Tang Hanshan's "Poems" No. 136: "There is a first-class stream in the world, which is as leisurely as wood." I don't know how to understand, and I don't have to worry.

The third and fifth chapter of "Dream of Red Mansions": Cong Sun Qiao "Your aunt is pitiful, she doesn't talk much, she is like wood, and her in-laws don't offer good children in front of her." ”

3. Chinese dictionary.

Timber. Fourth, the network explained.

Wood Wood: Chinese Words Wood: Chen Siwei sings the song Wood (Chinese Words) Wood, one of the Chinese words, means a general term for trees that have been cut down.

Wood is a product of forest owners and plays a great supporting role in human life, and people use it in different ways according to the different properties and characteristics of wood.

Synonyms about wood.

Timber wood. Antonyms about wood.

Smart. Poems about wood.

We are all wooden people", "Answer Bai Gong, Gao Jing Fights for Grass and Trees".

Verses about wood.

Crooked and dilapidated wooden domes and tall crosses - what do you want by pecking at the wood.

Words about wood.

woodknurwhittle

Idioms about wood.

The head is wood, the head is out of the head, the head is not the head, the head is the head of the Tao, Xingxing, the head is sharpened, the head is cut for the official, the head is on the head, the head is on the wood, the head is high, the head is bowed, and the head is bowed.

Words about wood.

Bamboo, sawdust, cane, puppet, wind wood, sigh, thousand-headed wood, slaves cut wood for officials.

Sentence formation about wood.

1. If you keep sawing wood with a rope, the wood will be sawn off; The water drips and drips, and it can drip through the stones.

2. Hypocritical people! Pluck the wood from your own eyes before you can see clearly and help your brother pull out the grass in his eyes.

3. He was ashamed and unspeakable, standing in front of the teacher, dumbfounded like a piece of wood.

4. On the first floor, he didn't step on the wood that floated side by side along the sandbar and let the river carry him.

5. The entire roof is supported by a large log.

The structure of the wood is: (upper right enclosing structure) wood (single structure).

The structure of the wood is: (upper right enclosing structure) wood (single structure). Pinyin is: wūmù.

What is the specific explanation of wood, we will introduce it to you through the following aspects:

1. Explanation of terms [click here to view the details of the plan].

Wood name. Also known as Udin Mu. An evergreen tree that grows in the tropics. The wood is solid and delicate, and the color is black, which can be used to make exquisite utensils and handicrafts.

2. Chinese dictionary.

Hard and heavy black wood. Translation of the words English ebony, German ausebenholz, ebenholzbaum(s) French ébène

3. Network Explanation.

Ebony (sunken wood) and ebony (gloomy wood) have both the quaintness of wood and the charm of stone, and are known as "Oriental Sacred Wood" and "Slippery Mummy". By **, floods, and mudslides, all the plants and organisms on the ground are buried in low-lying places such as ancient river beds, and some trees are buried in the silt. Under the state of hypoxia and high pressure, under the action of bacteria and other microorganisms, ebony is formed through a carbonization process of tens of millions of years, so it is also called "carbonized wood".

Ebony has been used as a ward off evil spirits throughout the ages, and has been used as handicrafts, Buddha statues, and amulet pendants. The ancients said: "A half square of ebony in a home is better than a box of treasures."

The modern "ebony" is a kind of mahogany, and the so-called "ebony mammoth" in the timber market generally refers to black African ebony and East African black sandalwood, which are a category of tree species and belong to a kind of national mahogany standard.

About the idiom of wood.

Shuimu, Qinghua, Yuanmu, Xi, fish, cut wood for officials, grass and trees, are soldiers, tomb wood, have arched wood, seek fish, grass and wood, rotten wood, wood brain.

Words about wood.

Stone heart wood, intestine tomb wood has been arched wind wood, sigh wood, Xi fish, grass and wood are rotten, cast wood, ice ming, in the arbor, water and wood, Tsinghua is about to cut wood for officials.