这是一根长1.5米的空心圆柱状设备，可以利用升降机穿梭于液压挖掘机打通的给养通道。
This is a 1.5 m long hollow cylinder apparatus, can use the elevator shuttle to hydraulic excavator through food channel.
排泥阀产品由液压缸和角式截止阀组合而成，液压缸内动力带动瓣升降，使阀体通道开或闭，以达到流体通断。
Mud valves and Angle by the hydraulic cylinder type combination valve, hydraulic power drive cylinder valve lift, the valve open or closed channel, in order to achieve the fluid off.
该技术利用液流浮力变化驱动浮体升降来控制排水通道的开闭。
This technology is using current buoyancy change, floating body to control drain switch of passageway.
电梯维修工设计、安装、维护和检修客运与货运电梯、自动扶梯、自动通道和其它升降设备。
Designs, installs, maintains, services and repairs electric and hydraulic passenger and freight lifts, escalators, moving walkways and other lift equipment. Registration or licensing may be required.
“升降机在那儿，但就是不用，”他说，“因为我们有电梯，使用升降机将必须关闭楼梯通道”。
"It's there but it's not used," he said. "We have the elevators and to use (the lift) the stairs have to be closed off."
“升降机在那儿，但就是不用，”他说，“因为我们有电梯，使用升降机将必须关闭楼梯通道”。
"It's there but it's not used," he said. "We have the elevators and to use (the lift) the stairs have to be closed off."
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