气态氦在光学纤维拉制中用作冷却剂，在色谱仪中用作运载气体，在许多工业中用作检漏气体。
Gaseous helium is used as a coolant during the drawing of optical fibers, as a carrier gas for chromatography, and as a leak detection gas in a variety of industries.
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.
利用勒氏指数法和气象色谱仪对灾区的气体成分进行分析，判断火区内气体的可爆炸性。
The paper analyzed the gas contents with the index method and atmosphere chromatographic analyzer to judge the gas explosive in the fire area.
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