A.实现往复运动和旋转运动间转换 B.承受弯矩 C.承受转矩 D.承受弯具和转矩
A.余切 B.反正切 C.切线 D.反余切
A.G82 X50.0 Y50.0 Z-10.0 R0 P2 F50 B.G81 X50.0 Y50.0 Z-10.0 R0 F50 C.G81 X50.0 Y50.0 Z-10.0 R5.0 F50 D.G83 X50.0 Y50.0 Z-10.0 R0 Q5.0 F50