anti-reverse mechanism 防反转机构
Magnetic reverse mechanism 磁力换向机构
reverse ejecting mechanism 反向顶出机构
Reverse Taxation Mechanism 逆向征税机制
The Pumping unit has a double-chain synchronous driving and reverse mechanism, and can realize flexible reverse with stroke increment;
抽油机具有双链条同步驱动换向机构，可实现增距式柔性换向；
The drum type pumping unit with the new reverse mechanism has the advantages of impact structure, light weight and extended gear reducer life.
采用这种机构设计出的滚筒机具有结构紧凑、重量轻及减速器寿命长等优点。
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