生代parallel: adj. 1.平行的;并行的 (to; with); 【 ...boom: n. 1.【造船】帆的下桁,帆遄,橫杠,吊桿;懸[轉(zhuǎn)、起 ...truss: n. 1.(干草等的)捆,把,束,一束干草〔老干草56磅 ...truss boom: 桁架伸臂起重機(jī)parallel chord truss: 平行弦桁架; 生代; 梯形桁架下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯