The utility model relates to a gas discharge device which is composed of an electric-control box, a methane detector, a portable blower, etc.
本实用新型涉及一种瓦斯排放器产品，是由电控箱、甲烷检测仪、局扇等几部分组成。
Using dual column with flame ionization detector to determine total hydrocarbon and non-methane hydrocarbon in air.
采用双柱双氢焰离子化检测器测定空气中的总烃和非甲烷烃。
This paper analyses detection principle of mine methane by use of a variable current detector, a new variable current detector circuit is designed.
分析了矿井瓦斯变流检测原理，设计出一种新型的瓦斯变流检测电路。
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