攉

有了攉煤机，再也不用人一铲子一铲子地挖煤了。

With coal shovel machines ; people don 't have to dig out coal shovel by shovel .

炮采工作面攉煤机主参数的理论计算

Theoretic calculation of main parameter of the coal shovel for blasting mining face

便携式炮采工作面攉煤机的研制

Development of the portable coal shovel for blast-mining face

初动期地洼盆地由西向东推进演化，余动期地洼洼盆地由东向西攉进演化。

In the initial-stability period diwa advanced from west to east , while in the residual-mobility period , from east to west .