The utility model relates to a non-contact on-line monitor for air leakage and negative pressure fault in a high-voltage vacuum switch.
本实用新型是一种非接触式的在线监测高压真空开关的漏气及负压故障的装置。
Vacuum dust collection system is system of high negative pressure and low air flow.
简介：真空吸尘系统，是一种高负压、低流量的除尘系统的统称。
Vacuum dust collection system is system of high negative pressure and low air flow.
真空吸尘系统，是一种高负压、低流量的除尘系统的统称。
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