extraction of gas

• 放气

extraction of gas的用法和样例：

例句

1. The reason of sponge outgassing is analyzed.
   对放气机理进行分析探讨。
2. The experiment reveals that the deflated gas will influence the cathode emittion ability.
   实验中还发现，阴极的放气源将严重影响阴极发射能力。