Hydrogen is also one of the coolest refrigerants.

氢是温度最低的冷冻剂。

Others are also looking at refrigerants that don't warm the atmosphere.

也有其他人在考虑不致大气变暖的制冷剂。

And as time goes by, the use of alternative refrigerants is changing.

和推移，替代制冷剂的使用是随着时间的变化。

The chlorofluoromethanes are used principally in aerosol spray cans and as refrigerants.

氯氟甲烷主要使用在气溶胶喷雾罐和作为冷冻剂。

In this paper, a precise low temperature thermostat is developed for PVT measurement of refrigerants.

介绍了一套自行研制的制冷工质PVT实验用精密低温恒温槽。