（2）第二种作用是用于抵抗污染的，比如AB叫帘气（Curtain gas），Thermo叫吹扫气（Sweep gas），Agilent叫反吹气。这路气体可以不开，对脏样品管用，对干净样品反而会降低灵敏度。
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The mass transfer effect of MA when using absorption solution is better than using vacuum-pumping and sweep gas .
一般采用吸收式膜吸收法的传质效果要优于减压式和吹扫式膜吸收法的传质效果。
In this paper, the necessary of sweep gas, the ratio of water versus oxygen of the feed gas as well as its pressure are studied to examine their effects on separation process.
本文主要研究了吹扫气、进气压力及水氧比对分离过程影响的一些规律。
Prepositive polymer slug displacement can decrease the effect by the formation heterogeneity, prevent the gas breakthrough and improve the displacement sweep efficiency of the injective gas.
对于地层非均质性的影响，通过注入聚合物段塞调驱，能起到防止气窜，增加注入气驱扫效率。
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