| 1. | Atmospheric air - test dust standard sample - fly ash
大气试验粉尘标准样品煤飞灰 |
| 2. | Atmospheric air - test dust standard sample - loess dust
大气试验粉尘标准样品黄土尘 |
| 3. | With each piston stroke , a small quantity of atmospheric air or gas is pumped into the discharge air vessels
在活塞的每个冲程中，将少量的空气或气体输送到空气槽内。 |
| 4. | Air pollution . nitrogen dioxide content of atmospheric air . method of determination by collection on a triethanolamine - impregnated filter
空气污染.大气中二氧化氮含量的测定.用三乙醇胺浸渍的过滤器收集取样的测定方法 |
| 5. | Oxygen is produced by an air separation unit ( asu ) through liquefaction of atmospheric air and separation of the oxygen by continuous cryogenic distillation
氧的生产使用空气分离装置（ asu ） ，通过大气的液化和连续低温蒸馏分离出氧。 |
| 6. | The friction produced when the meteors and the meteor particles rub against the atmospheric air incinerates the swarms , and they fall towards the earth in a brilliant display of light
流星及流星颗粒与大气层摩擦产生的炽热将流星团熔化，它们纷纷向地球坠落，呈现出光芒四射、五彩缤纷的奇观。 |
| 7. | Absolute pressure gauges are always used when - particularly with measurement of low pressure or vacuum - influence from atmospheric air pressure fluctuations which could falsify measurements has to be ruled out
绝对压力表通常用于去除使测量结果产生误差的大气压力影响，特别适用于低压或真空测量。 |
| 8. | The friction produced when the meteors and the meteor particles rub against the atmospheric air incinerates the swarms ， and they fall towards the earth in a brilliant display of light
一些科学家推断，每天每夜都有成千上万的流星坠落到地球上，但这一理论无法得到证明，也无法加以否定，因为大多数流星必然落到江河湖海中，它们占据了地球的大部分面积。 |
| 9. | The technology involved in providing a continual stream of high purity nitrogen is pressure swing adsorption . this technique uses a bed of carbon molecular sieve to selectively remove oxygen and other contaminants from atmospheric air
碳分子筛从空气中分离氮气的原理是根据空气中氧和氮在碳分子筛中不同的扩散速度或不同的吸附力以及两种效应同时起作用的结果。 |
