slip-type elevator for deep-well drilling rods
喉管尾盖
elevator pipe rear cover【铁路】
暂无补充释义。
相关词条
lift/elevator
elevator【解剖】;levator【解剖】;levator muscle【解剖】
returning of controlling lever to its neutral position elevator (lift)
elevator control (flipper) aircraft
hydraulic rope-geared elevator【机】
skull elevator
bed elevator