Expasion shafts and couplings 等什么意思

下面答案仅供参考：

膨胀轴和联轴器
卷绕轴
膨胀轴插入和撤离设备

Expasion shafts and couplings
Winding shafts
Expanding shaft insertion and withdrawal devices

Expasion 轴和连合
弯曲的轴
扩大轴插入和收回设备

Expansion shafts and couplings 膨胀轴和联轴器

winding shaft 卷轴、提升井

Expanding shaft insertion and withdrawal devices
胀缩轴插入和退卸工具