self-rotation

n.固有转动

The tunneling and bolting machine of the invention has the functions of stretching back and forth, vertical and horizontal regulation, self rotation of the roof-bolter, etc. 本发明掘锚机具有前后伸缩、垂直水平调整、锚杆机自身旋转等功能。

Adopting self Propelled tram's ring like track for the haulage from mine pit mouth to mine run bin lead the mine tram to self return,self sliding and self rotating. 矿山井口到原矿仓运输采用自动环形道,使矿车自升、自溜、自回。

I do not like to go to the movies by my self. 我不喜欢自己一个人看电影。

I my self is going to make a sandwich. 我要亲手做个三明治。

He was a wreck of his former self. 他身体坏得不成样子，已兴从前判若两人。

The seasons follow each other in rotation. 四季循环交替。