n.門框

=doorcase.

Mother held on to the doorframe and almost fell. 母親手扶著門框，幾乎跌倒。

A suit of doorframe spot frame clamp. 門框點(diǎn)框夾具一套。

My head bumped against the doorframe. 我的頭磕在了門框上。

Due to carelessness, his head hit the doorframe with a loud bang. 他不小心把頭撞到了門框上,一聲巨響。

CTY1C is channel section doorframe stacker,Don't sideload and over load. CTY1C為槽鋼門架裝卸車,絕不可偏載超載使用。

Four can open normally, doorframe, threshold and so on not any distortion. 四門均能正常開啟，門框、門檻等沒有任何變形。