permanent gas

Condensable gas exhibits some unusual behavior in polymer membrane compared with permanent gas.

与永久性气体相比,可凝性气体在聚合物膜中表现出一些“非常规”渗透行为.

The material processed in oil-gas separation of catalytic cracking process is a complex mixture of permanent gas, supercritical gas, water vapor, liquefied gas and gasoline, so the process computation is difficult.

催化裂化反应油气分离过程处理的物料是由永久气体、超临气体、水蒸气、液化气和汽油组成的复杂混合物，工艺计算较为困难。

The changes in solar constant, Rayleigh scatting, permanent gas absorption and water vapor content are not the main factors of the changes observed in solar radiation.

研究认为太阳常数的变化、大气Rayleigh散射和包括水汽在内的气体吸收的变化不是造成目前地面太阳辐射变化的主要因素。