摘要航天器的单点漏率测试往往采用氦质谱吸枪检漏法，因此，研究该方法的不确定度评定具有重要的工程实际意义。
Abstract: Helium mass spectrometer sniffing probe method is widely used in the process of the single point leak testing on the spacecraft.
吸锡枪及烙铁为低压输出24v及防静电设计，有效保护线路板。
Low voltage 24v of both absorb gun and soldering pen has good protection of circuit board.
化纤行业主要是仪表气和吸丝枪用气，印染主要是动力和仪表用气。
Chemical fiber industry is the main instrument gas and absorb gun, printing and dyeing main gas wire is power and gas meter.
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