The screw propeller is very efficient for push water.
在螺旋桨是非常有效的推水。
2
The concept of minimum limit push lead (MLPL) in the design of varying pitch screw is introduced and a comprehensive theoretical analysis is carried out.
提出了不等距螺旋设计中的最小极限推程问题，并进行了全面的理论分析。
3
For models with a screw-in crown, please push and screw the crown in as far as the stop.