flame proofer

同根派生

This paper describes the formula for cold parkerizing flame proof joints of electrical apparatus for explosive gas atmosphere and process for cold parkerizing of flame proof joints.
经过试验验证,改进后的工艺和设备既保证了密封,又控制了变形,满足了防爆标准对高压隔爆接线盒隔爆面平面度的要求。
marine flame proof axial flow ventilator
船用防爆轴流式扇风机
Flame proof dry-type transformer
隔爆型干式变压器
There is positive proof that he did it.
有确切的证据证明他做了此事。
Discussion on technical standard of mine flame proof seal dam
煤矿防爆密闭墙技术标准探讨