elevators电梯
elevatorn.<美>电梯;飞机升降舵;斗式皮带输送机
elevator dispatching电梯调度
elevator gate system电梯门系统
elevator compartment电梯轿箱
elevator shaft gates升降机井门
Elevator Performance电梯效率
elevator guide rails升降机导轨
elevator pawl casing升降机棘爪套
elevator shaft works电梯井工程
elevator mahine room电梯机房
elevator's guide way食用菌产业