adj.無管的；無導(dǎo)管的

Carrying down or away. Used of a duct or vessel. 傳送的指通過導(dǎo)管或管道傳送下來的或輸送的

A duct often contains cross braces. 管道內(nèi)往往是有支撐拉條。

A tube or duct for enclosing electric wires or cable. 線管包裹電線或電纜的管子或溝道

A/C duct and vent duct structure of W/H Deck. 駕駛甲板空調(diào)、機(jī)械風(fēng)管結(jié)構(gòu)。

Maybe you have never heard of duct tape. 也許你還沒有聽說過管道膠帶吧。

The tie on the cystic duct may slip off. 在膽囊管上的結(jié)扎可能滑脫。