booms
[ boom ]的第三人称单数;[ booming ]的第三人称单数
- I spent most of the next two days inspecting the harbour and the entrances with their booms and nets.
以后的两天，我用大部分的时间视察港口入口处以及水栅和铁丝网。 收藏 - "The Base vault, roadway surface and vault are concreted with concrete pumps and placing Booms with a range of up to 38 m."
用置于隧道内的混凝土泵和布料机对拱形基底、路面板和拱穹浇注混凝土,作用距离可达38米。收藏 - Application of Concrete Pumps and Placing Booms during the Construction of the Base Tunnel
该基础隧道采用混凝土泵和布料机施工收藏
开心词场背单词