论述了用于井下巷道工作面等处照明开关的防爆性。
This puper expounds explosion-proof property of lighting switches used in underground tunnel working area etc.
进一步明确和改进瓦斯隧道机电设备防爆性配备的原则和相关条款。
The principles and stipulations for the allocation of explosion-proof electrical and mechanical equipment for tunnels in gas-containing ground should be further clarified and improved.
由于壳体的防尘密封，确保了整体防爆性，增强了给料机的安全性。
Due to shell has good dust seal to guarantee whole body anti explosion and to strengthen safety of coal feeder.
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