What does HB mean in English, what does HB mean

hb abbr.human being (美俚) 人; hardback (books, periodicals, etc.); hardbook (books, periodicals, etc.); highband high frequency band;

Bilingual example sentences English-English paraphrase encyclopedia.

hb abbr.haemoglobin hemoglobin.

The English abbreviation "HB" means: pencil lead hardness, hard black; It is an abbreviation for Hardness Black.

Pencil specifications are usually expressed in H and B, "H" is the beginning of the English "hardness" (hard), indicating the hardness of the pencil lead, the larger the number before H, indicating the more clay it contains, the harder its lead core, the lighter the color.

b"It's "black" in English"The first letter of (black) indicates the blackness and softness of the pencil lead, and the larger the number in front of b, the more graphite the composition, and the darker the color of the lead core.

HB pencil is a type of pencil. HB indicates hardness or gray in the middle (slightly black). The HB pencil is mainly used for writing, and its handwriting color is darker than that of the H pencil, but it is easier to erase than the B pencil.

1. The English abbreviation of hemoglobin is HGB or HB. Hemoglobin is a special protein that transports oxygen in red blood cells, is the protein that makes blood red, and is composed of globin and heme, and its globin part is a tetramer composed of two different pairs of globin chains (chain and chain). The International System of Units (SI) is used in many countries, based on the number of grams of hemoglobin per liter (1,000 milliliters) of blood.

The use value of hemoglobin and red blood cells is similar, and the increase and decrease of hemoglobin can refer to the clinical significance of red blood cell increase and decrease.

2. HB (Southeast Asia Fifth Personality Team) generally refers to Humberer. In January 2019, Team Humberer successfully qualified for the 1st Anniversary Celebration and COA Finals of "The Fifth Personality" in the Southeast Asian Qualifiers. On April 30th, on the first day of the 1st anniversary celebration and the COA Global Championship, Humberer was eliminated by the GUM team.

3. Brinell hardness HB:Hardness indicates the ability of a material to resist a hard object pressing into its surface. It is one of the important performance indicators of metal materials. Generally, the higher the hardness, the better the wear resistance.

4. HB is a term for construction engineering. For example: the length of the beam end infill area (seismic grade) max(2 hb,500) and the length of the beam end infill area (seismic grade, grade) max(,500), where hb - beam height.

5. Fabric test: HB Grade: Horizontal Burning Test. Determination of the horizontal combustion performance of plastic textile fabrics.

Unlock mark (unlock key), function: remote control unlocking; When the car turns on the anti-theft alarm, you need to press the unlock button to turn off the anti-theft alarm. "Rattle" symbol, function:

One-click car search; In the wide parking lot, there will always be a situation where you can't find your car, at this time, press the rattle button, and the body will automatically ring five times, so that the owner can find the car. "Lightning" symbol, function: keyless activation; In the case of accidentally losing the car key, press the lightning button twice to start remotely, at this time you can start the electric vehicle normally, pay attention to press the unlock button when leaving the car, and then press the lock key, so as not to keep the vehicle in the starting state, remind not to use it until the emergency.

When the car turns on the anti-theft alarm, you need to press the unlock button to turn off the anti-theft alarm. "Rattle" symbol, function: one key to find the car; In the wide parking lot, there will always be a situation where you can't find your car, at this time, press the rattle button, and the body will automatically ring five times, so that the owner can find the car.

"Lightning" symbol, function: keyless activation; In the event that you accidentally lose your car key, press the lightning button twice to start remotely

Hb stands for hemoglobin. Hemoglobin, also known as hemoglobin, is the main component of red blood cells and binds to oxygen to transport oxygen and carbon dioxide. The hemoglobin content is a good indicator of the degree of anemia.

Normal range. Males 130 175g l (;

Females 115 150g l (;

Newborns 170 200 g l (.

Check the introduction. Hemoglobin, also known as hemoglobin, is the main component of red blood cells and binds to oxygen to transport oxygen and carbon dioxide.

The main component of pencil leads is graphite. In fact, the lead of the pencil is made of a mixture of graphite and clay in a certain proportion. Such as:"h"i.e. English"hard"The prefix (hard), which stands for clay, is used to indicate the hardness of the pencil lead.

h"The larger the number in front (e.g. 6h), the harder the pencil lead, that is, the greater the proportion of clay mixed with graphite in the refill, and the less obvious the words written, which are often used to repeat. "b"It's English"black"The prefix (black), which stands for graphite, is used to indicate the softness of the pencil core and the degree of visibility of the writing. to"6b"It is the softest, the blackest handwriting, and is commonly used for painting, and the ordinary pencil marking is general"hb"。

The pencil markings used to paint the answer sheets during the exam are generally numbered"2b"。

The main components of the lead core of the pencil are graphite and clay, and the pencil is divided into 18 types according to the national standard according to the graphite concentration. In the current standardized test in China, the computer can only read the pencil handwriting with a lead core concentration of 2b, and too thick or too light will cause the failure or error of computer reading.

In the early days, pencils contained lead, but now the main components of pencil refills used by people are graphite and binders, which no longer contain lead and are harmless to the human body.

Since the main component of pencils is graphite, and graphite is a conductor, pencil leads are electrically conductive. However, the conductivity of pencil leads is not very strong. Because of the arrangement of the atomic structure of graphite, it can only conduct electricity in two dimensions, that is, it is conductive between two points in the same plane, and the upper and lower sides of the plane are not conductive.

The graphite in the pencil lead is crushed and mixed with clay, so the atomic structure is disrupted, so the conductivity is not very good. In the experiment, if the length of the 2B pencil lead is more than 15cm, the small bulb does not emit light. (Voltage around 5V).

Pencil, not hard or soft, medium black, h is hardness, B is blackness, such as 2B is darker than HB.

What does the hb on the pencil mean in the 31 treasure gourd of scientific knowledge.

Are you talking about pencils? H-hard hardness, B-black blackness.

Hero Beat, one of the mainstream Yu-Gi-Oh decks.

Forehead means yellow b. Swearing.

Sichuan dialect Ha Qiang consciousness is to say that you are stupid.

H is the abbreviation of hard, which is hardness.

B is an abbreviation for black, which is the depth of color.

A number is usually added before the letter, and the higher the number, the greater the depth, and the hb is medium.