Three types of adjustable turning rolls: manual lead screw adjusting, manual bolt shifting and electric sliding plate shifting.
三种可调式滚轮架：手动丝杆可调式、手动螺栓移位式和电动滑板移位式。
The screw fixing hole and the screw adjusting holes are tapered counter bores.
螺钉固定孔、螺钉调节孔为锥形沉孔。
Therefore, this method is not appropriate as a single-screw adjusting parameters means.
因此，这种方法不宜作为单螺杆泵调整参数的手段。
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