It consists of motor, drive mechanism and the drum or sprocket composition, divided into two types of wire rope and chain.
它由电动机、传动机构和卷筒或链轮组成，分为钢丝绳和环链两种。
It consists of the chain, the drive sprocket and the driven sprocket.
它是由链条和主、从动链轮所组成。
It consists of the chain, the drive sprocket and the driven sprocket.
它是由链条和主、从动链轮所组成。
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