technical gases造句

laboratory equipment-laboratory fittings-part 3 : valves for technical gases
实验室设备.实验室配件.第3部分:工业气体阀门
testing of gaseous fuels and other technical gases; determination of dew point of water vapour; method of means of cooled mirror
气体燃料和其它工业用气体的检验.水蒸汽露点测定.冷
testing of gaseous fuels and other technical gases-determination of sulfur compounds content-part 6 : content of hydrogen sulfide, mercaptan sulfur and carbonylsulfide sulfur; potentiometric method
气体燃料和其它工业气体的检验.硫化合物含量的测定
It's difficult to find technical gases in a sentence. 用technical gases造句挺难的