The mechanical device comprises a rotary drum and a driving mechanism for driving the rotary drum to rotate, wherein the rotary drum is internally provided with a spiralguide plate;
本发明包括一个转筒和带动转筒旋转的驱动机构，转筒内 设有螺旋导板；
2
Completely rewritten and updated for the Fourth Edition, this Spiral (r) Manual remains the leading quick-reference guide to both medical and surgical intensive care.
完全重新编写和第四版更新，该螺旋(R)的手册仍然是领先的快速参考指南，医疗和外科重症监护。
3
The spiral flow in the horizontal pipe can generate the spiral flow to transport sediment according to the way of equipping the guide blade in the middle of the pipe.