单一气体是汉语词汇，读音danyiqiti，指其他组分不超过规定限量的气体。
单一气体检测仪 MSA ALTAIR PRO ; TOXI LTD ; Single Gas Detector
便携式单一气体检测仪 MiniMAX Pro ; MiniMAX XP ; GasBadge
便携式单一气体探测器 Protable Single Gas Detector
单一成分气体 simple gas
它适合单一气体和固定比例多组份气体的测量。
It is suitable for single gas and a fixed proportion of multi-component gas measurement.
由于气体传感器自身的交叉敏感等物理缺陷，单一气体传感器无法对多种气体进行准确的定性识别和定量检测。
Because of the gas sensor's physical shortcoming such as its cross sensitivity, a single gas sensor can't accomplish the multiple gases' qualitative identification and quantitative detection.
井筒内的天然气都是由多种气体组成的混和天然气，由于气体各组分的分子量不同，会在重力场作用下发生重力分异，从而使井筒内混和气体的性质与单一气体有很大差异。
Natural gas in wellbore is a mixed gas consisting of various gas. Due to molecular weight of all kinds of gas is different, they will occur gravity segregation under the action of gravity field.
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