head space gases meaning in Chinese

容器中液上气体

Determination of trace chloroform and carbon tetrachloride in water by head space gas chromatogrophy with electron capture detection
法测定水中微量的氯仿和四氯化碳
Test method of samples of geochemical exploration for oil and gas part 3 : determination of light hydrocarbons in head space gas chromatography
油气化探试样测定方法.第3部分:顶空间轻烃测定.气相色谱法