How do you write a sentence under the rain of sweat?What sweat rains down

On the afternoon of hoeing day, sweat drops into the soil"。It's about the peasants who toiled when the sun was at its head, and (sweat rained) dripping into the dirt.

I was sweating hot, and the sweat was dripping like rain, wetting my clothes.

My father also cultivated in the fields, and the sun was like fire and sweat was like rain.

Discharge cooling is another type of convection cooling. Unlike regenerative cooling, the coolant used for exhaust cooling absorbs heat from the thrust chamber and is discharged out of the combustion chamber instead of entering the combustion chamber to participate in combustion. Direct drain coolant reduces the thrust chamber specific impulse, so the coolant flow for drain cooling needs to be minimized while only using drain cooling at the outlet section of the nozzle that is relatively less heated.

There is also radiative cooling, in which the heat flow is transferred from the combustion products to the thrust chamber, and then the heat is radiated by the thrust chamber wall to the surrounding space. Radiative cooling is characterized by simplicity and small structural mass. It is mainly used in the extension section of large nozzles and the thrust chamber of small thrust engines using high-temperature resistant materials.

When the thrust chamber is cooled, a relatively low temperature liquid or gas protective layer is established on the surface of the thrust chamber wall to reduce the heat flow to the thrust chamber wall, reduce the wall temperature, and achieve cooling. Internal cooling is mainly divided into three methods: internal cooling (shield cooling), membrane cooling and diaphoretic cooling of head tissues. After the internal cooling measures are adopted in the thrust chamber, the mixing ratio near the wall of the combustion chamber is different from the optimal mixing ratio in the central area (in most cases, the near-wall layer rich in fuel is used) due to the need to reduce the temperature of the protective layer, resulting in the uneven distribution of the mixing ratio along the cross-section of the combustion chamber, so that the combustion efficiency is reduced to a certain extent.

Membrane cooling is similar to shield cooling, which is to cool the thrust chamber wall by establishing a uniform and stable coolant film or air film protective layer near the inner wall surface, except that the coolant used to establish the protective layer is not injected by the injector, but is supplied through a special cooling belt. The cooling band is generally arranged in a cross-section of the combustion chamber or the convergence section of the nozzle. There can be several cooling bands along the length of the combustion chamber.

In order to improve the stability of the membrane, the coolant often flows through the gaps or small holes in the cooling belts, and when sweating is used, the thrust chamber wall or part of the inner wall is made of porous material with a pore diameter of tens of microns. Porous materials are usually sintered with metal powders or pressed with metal mesh. In this case, the number of pores per unit area is increased by making the micropores in the material as evenly distributed as possible.

The liquid coolant penetrates into the inner wall, creating a protective film that reduces the density of the heat transferred to the wall. When the flow rate of liquid coolant used for sweat cooling is above a certain threshold, a liquid film is formed near the wall of the thrust chamber. When the coolant flow rate is below the critical flow, the inner wall temperature will be higher than the coolant boiling point at the current pressure, and some or all of the coolant will evaporate, forming an air film.

In addition to the above thermal protection, there are other thermal protection methods such as: ablation cooling, thermal insulation cooling, hot melt cooling and composite protection of chamber walls. 3. Thermal protection scheme of high enthalpy gas generator Based on the above methods and the actual situation, the thermal protection method of high enthalpy gas generator is obtained.

The combustion chamber of a high-enthalpy gas generator differs from that of a liquid rocket engine, eliminating the front thrust chamber part, making its structure simpler and more effective. Then, the thermal protection involved is the thermal protection part of the combustion chamber wall. As the fuel enters the combustion chamber, it quickly decomposes and releases large quantities.

Sweat like rain when you're busy, sweat like rain when you're tired. sweat如雨下 (hàn rú yǔ xià).

1. Explanation: Beads of sweat fall like rain. Described as sweating a lot.

2. Source: Song Shi Puji's "Five Lantern Huiyuan" volume 47: "Three winters sweat like rain." ”

3. Vernacular interpretation: Sweat is like rain in the cold days of Sanjiu.

4. Idiom usage: as a predicate and adverbial; Described as sweating a lot.

Synonyms for sweating like rain:

1. Sweat out like pulp: hàn chū rú jiāng.

Usage] as a predicate, a definite; Used for the appearance of a person.

2. Sweat and sweat: hàn liú jiā bèi [interpretation]: 浃: soaked. Sweating profusely. Described as very frightened or very frightened. Now I also described sweating a lot, and the clothes on my back were soaked.

From]: "Historical Records of Prime Minister Chen Cheng's Family": "Bo and Xie don't know, sweating and backing, I can't be ashamed." "The Book of the Later Han Dynasty: The Chronicle of Queen Fu": "out, take care of the left and right, and sweat." ”

Syntax]: subject-predicate; as a predicate, a definite, an adverbial; Refers to sweating profusely.

It's like this when you exercise vigorously, everyone sweats differently, and some people sweat a lot when they move a little.

In the summer, if you exercise too much, you will sweat like rain.

The next sentence of "sweating like rain" is: shoulder to shoulder. "Sweating like rain" is an idiom that refers to the sweat that is wiped off is like rain, describing the hot weather and sweating a lot. Generally, it is mostly used as a predicate, a definite, an adverbial, and also as a complement.

Sweating like rain is an idiom in historical stories, this story was first from "Warring States Policy: Qi Ce I": "On the way to Linzi, the hub hits, the shoulders rub, even the curtain is formed, the coat is raised into a curtain, and the sweat becomes rain." ”

Sentence formation: 1. Under the scorching sun, my mother was sweating and working in the fields.

2. In the busy season, although the farmers sweat like rain, they refuse to stop working.

3. At that time, the fire extinguishing work was so intense, everyone was sweating like rain, who could think so much.

4. Although she has been sweating like rain, she refuses to stop.

5. In this game, despite our sweat, we lost to the opponent with a score of 56-57, only one point.

Sweat rained down.

Pinyin: hàn rú yǔ xià

[Explanation]: Beads of sweat fall like rain. Described as sweating a lot.

[Example sentence]: If you don't stumble over a stone, it's like waking up from a dream, and you're sweating like rain. Qing Cao Xueqin's "Dream of Red Mansions" is the first episode

Pinyin**: hryx

[synonyms]: sweat like rain

[Usage]: as a predicate, adverbial; Described as sweating a lot.

[English]: sweat profusely

Feeling sweaty rain is a state, not a demeanor.

Sweating like rain, the next sentence is "if you don't advance, you will retreat". This sentence is intended to express that a person can only maintain his dominant position if he keeps working hard and forging ahead, otherwise he will be eliminated. If you don't advance, it is equivalent to standing still, and being eliminated is gradually losing competitiveness.

This idiom originates from the practice of ancient military warfare, which refers to the fact that if the army dismantling and carrying team does not actively attack in battle, its strength will be consumed by the opponent, and the initiative will be lost, and finally defeated. This idea was gradually applied to business competition and personal growth, and became an important philosophy of life.

In today's society, competition is becoming more and more fierce, and people are constantly demanding to improve their competitiveness. At the same time, technology is advancing at a rapid pace, and many of the previous advantages can become disadvantages in a short period of time. Therefore, each of us needs to constantly expand our knowledge and skill range in order to remain competitive and not be left behind in the changing era.

This is also the meaning of this idiom in today's society.

For individuals, it is also an attitude to retreat if you don't advance. To achieve success, in addition to hard work, we must constantly put forward higher requirements for ourselves and keep forging ahead. Once complacent, it begins to regress.

At the same time, this attitude also requires people to constantly seek improvement and improvement in the face of difficulties and setbacks, so as to propel themselves to success.

In short, "if you don't advance, you will retreat" is a philosophical thought that is deeply rooted in the hearts of the people, and it is of great significance in various fields such as life, career, and academia. It reminds us that we must have a positive attitude, constantly pursue improvement and innovation, stay competitive and win more success. <>