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.
經過試騐騐証,改進後的工藝和設備既保証了密封,又控制了變形,滿足了防爆標準對高壓隔爆接線盒隔爆麪平麪度的要求。
marine flame proof axial flow ventilator
船用防爆軸流式扇風機
Flame proof dry-type transformer
隔爆型乾式變壓器
There is positive proof that he did it.
有確切的証據証明他做了此事。
Discussion on technical standard of mine flame proof seal dam
煤鑛防爆密閉牆技術標準探討