查询词典 gases

The flame use oxyacetylene or other burnt gases, for this method, the equipment is simple, the operation is easy, but the difficulty is large.

火焰采用氧—乙炔火焰或其它可燃气体火焰，这种方法设备简单，操作容易，但难度较大。

A colorless, highly flammable gaseous element, the lightest of all gases and the most abundant element in the universe, used in the production of synthetic ammonia and methanol, in petroleum refining, in the hydrogenation of organic materials, as a reducing atmosphere, in oxyhydrogen torches, and in rocket fuels.

氢：一种无色，易燃的气体物质，在所有气体中最轻，而宇宙中最多用来生产合成氨和甲醇，提炼石油，氢化有机物质作为收缩的气体，用在氧氢焰熔接器和火箭燃料中。

UV lamp produces the only by-product is ozonization, which is a kind of sweet hen'egg gases, in concentration well below 0.1 ppm can smell it.

UV灯产生的惟一副产品是臭氧，它是一种带甜味的刺激性气体，在浓度大大低于0.1ppm时也能嗅到。

It is available for the selective oxidation of other paraffin gases also.

该装置也可用于其他烷烃选择氧化的人为非定态操作性能研究

The oxidation of nickel powder was avoided in the process of storage and use by using nitrogen mixed with a little air and inert gases to passivate the surface.

结果表明：采用沉淀转化一热分解技术，通过隔膜电解造液，常温常压下的复杂镍盐沉淀控制，气氛调控下的热分解和表面防氧化处理，成功地生产出了理化性能优于INCO公司同类型镍粉的特种镍粉。

But Pepin notes that when early Earth was struck by the cataclysmic impact that resulted in the formation of the moon, primordial gases in the mantle could have been completely released to the atmosphere, leaving behind no evidence that they had ever existed there.

但是佩平指出，当形成月球的那次猛烈碰撞袭击地球的时候，地幔中的原始气体可能已经全部释放到大气中，没有留下任何曾经存在于地幔中的证据。

How can it be proved that gases are perfectly elastic?

如何证明气体具有理想的弹性呢？

It is a matter of common observation that gases are perfectly elastic.

众所周知，气体是完全弹性体。

Gases and liquids are perfectly elastic.

气体和液体都是完全的弹性体。

Gases and liquids are perfectly elastic, after their being compressed they return to their original volume as soon as the applied force is removed.

气体和液体是很有弹性的。在它们受压缩以后，当施加的力一移走，它们就马上恢复原来的体积。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。