先将液态丙烯汽化成气态，用气体进样阀将气态丙烯样品进样到气相色谱仪中，由5A分子筛填充柱进行分离，用TCD检测器检测，外标法定量。
Propylene was vaporized from liquid to gas, then sampled to GC by gas sample valve, separated in 5A molecular sieve column, and determined with TCD.
本阀门适用于气相色谱仪或其它仪器调节载气、辅助气和其它气源气体流量的大小。
The valve for gas chromatography or other instruments to adjust the carrier gas, auxiliary gas and other gas source gas flow size.
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