这些组件配有单级旋转螺杆有助于降低运营成本，提高生产率，这些产品为滑动底板安装。
These units feature a single stage oil flooded rotary screw for increased productivity at reduced operating costs, and they're skid mounted for permanent installations.
煤层及其顶底板中滑动现象极为普遍。
The sliding phenomenon between coal seam and its roof or floor is very common.
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