Gas detectors for continuous operations (used to detect the chemicals with export control or organic compounds (containing phosphorus, sulfur, fluorine or chlorine, with the concentration lower than .3mg/m3), or detect the activity of inhibited cholinest 用于连续操作的气体检测器(可用于出口管制的化学品或有机化合物(含有磷、硫、氟或氯，其浓度低于0.3mg/m3)的检测，或为检测受抑制的胆碱酯酶的活性而设计),
