Sample gas tubes are flushed with nitrogen . 采气管得用氮气吹扫。
Measuring systems are affected by other properties such as thermal conductivity and thermal convection of the sample gas . 测量系统还受样品气体的导热性和热对流性之类其他性能的影响。
Standard practice for sampling gas from a transformer under positive pressure 在正压力下从变压器中抽取气体样品的标准实施规程
Workplace air . determination of toluene . passive sampling gas chromatographic method 作业场所空气中甲苯的无泵型采样气相色谱测定方法
Workplace air . determination of acetic ether . passive sampling gas chromatographic method 作业场所空气中乙酸乙脂的无泵型采样.气相色谱测定方法