overhead transmission line [電] 架空輸電線；高架輸電線路overhead transmission gear 架空傳動(dòng)裝置overhead transmission 天軸overhead traffic light signal [政治學(xué)]架空交通燈overhead telecommunication line [土木建筑工程]架空電訊線路overhead system 架空系統(tǒng)overhead stacking crane [機(jī)械工程]橋式堆垛起重機(jī)overhead spending variance [經(jīng)濟(jì)學(xué)]間接費(fèi)耗用差異間接費(fèi)用開支差異overhead road [交] 高架道路overhead railway 高架鐵路，架空鐵道overhead projector n. 高射投影儀overhead process camera [經(jīng)濟(jì)學(xué)]上梁式攝影機(jī)overhead power transmission line [電子、通信與自動(dòng)控制技術(shù)]架空輸電線路[交通運(yùn)輸工程]架空電力線overhead power transmission [動(dòng)力與電氣工程]架空輸電overhead power line fitting [動(dòng)力與電氣工程]線路金具overhead power line 架空電力線路overhead position welding 仰焊overhead line crossing overhead line 架空線路；架空管道overhead light 頂燈，高架照明燈