Do not permit cylinders to come in contact with electrical apparatus or circuits.
禁止钢瓶接触电力设备或电路。
The application of phase selection close switch in low voltage electrical apparatus test was introduced.
介绍了低压电器产品试验中选相合闸开关的应用。
Electrical apparatus for use in the presence of combustible dust - Part 0: General requirements.
有可燃性粉尘场合用电气设备。第0部分：一般要求。
Electrical apparatus for use in the presence of combustible dust - Part 0: General requirements.
有可燃性粉尘场合用电气设备。第0部分：一般要求。
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