throughadv.通过;径直;自始至终;(电话)接通;完全prep.穿过;凭借;一直到adj.直达的;直通的;贯穿的;完成的;结束的
through bridge下承式桥,下承桥
through-hole金属化孔,透孔
through phrase[计] 通过短语
through reamer长铰刀
through strata穿层
through flight直达航班
through retort直通干馏炉
through lintel穿透过梁
through ladder安全围栏梯
through girder下承梁