hydrogen gas purity control 氢气纯度调整
nitrogen gas purity 氮气纯度
gas chromatographic purity [分化] 气相色谱纯度
High purity gas 高纯气体 ; 超纯气体
High Purity Gas Pipeline Installation 高纯气体管道安装
High-purity technological gas 高纯工业气体
High Purity Hydrogenous Gas Generator 氢气发生器
high-purity gas 高纯气体
Fluorine gas purity of its products, anti-corrosion chromatography, in the blank.
对其产品氟气纯度的防腐色谱分析，处于空白。
If the protective seal is not air proof or poor gas purity, it will also bring welding quality problems.
气路有密封不好的问题，或气体纯度不高，也会引起焊接质量问题。
Many factors which may affect the catalytic behavior such as rare earth metal species, calcination temperature, reaction temperature, space speed and feed gas purity were studied.
并研究了不同稀土金属，不同焙烧温度，不同反应温度，不同空速条件及不同来源氢气等因素对催化性能的影响。
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