The flammable gas detector is a safety monitor instrument, which is widely used in the petroleum chemical industry field.
可燃气体探测器属于安全监测仪器，广泛应用于石油化工领域。
2
For the purpose of safety of drinking water supply, a photoelectric synthetic toxicity detector is presented.
针对饮用水的安全检测，给出了一种光电型综合毒性检测仪的设计方案。
3
The feeling of safety provided by two mighty oceans now gone, Americans no longer get on planes as if they were buses or go tee baseball games without a brush from a metal or explosives detector.