The face of life's troubles and setbacks, the most important is to straighten out his own heart state, positive facecutting.
面对人生的烦恼与挫折，最重要的是摆正自己的心 态，积极面对一 切。
2
Based on experiments of the facecutting of the weak workpiece, effects of the ultrasonic elliptical vibration cutting on the weak workpiece are researched.
根据弱刚度零件端面切削实验，研究了超声波椭圆振动切削对弱刚度零件的切削效果。
3
They work with remote control devices that change the direction, position and speed of a German-made cutting machine that slices back and forth along a 300-metre-wide coal face.