self closing device

基本解釋

Door shall become self-closing on interruption of signal to release device.
當(dāng)釋放裝置信號(hào)中斷時(shí)自動(dòng)關(guān)閉。
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Doors of engine casing and stair casing on main deck are of fire doors with self-closing device.
主甲板機(jī)艙棚圍壁和梯道環(huán)圍等處安裝的門為帶閉門器的防火門。
When the partition is running, the wicket is always at closing state for the guarantee of self-lock device. So, there will be no accident when the wicket is suddenly opened.
屏風(fēng)在運(yùn)行中，有自鎖裝置的保護(hù)，小門始終處在關(guān)閉狀態(tài)，這樣就不會(huì)因小門扇的突然張開而帶來(lái)意外。