A.G90G00X140.0Y50.0Z-5.0
B.G90G00X140.0Y50.0Z-5.0;G01X90.0Y50.0F100.0;G01G42X90.0Y50.0D01F100.0;G03X-21.962Y20.0I60.0J0D01;G03X-21.962Y20.0R70.0
C.G90G00X140.0Y50.0Z-5.0
D.G90G00X140.0Y50.0Z-5.0;G91G42G01X90.0Y50.0D01F100.0;G91G42G01X-50.0Y0D01F100.0;G03X-21.962Y20.0R60.0;G03X-111.962Y-30.0I-60.0J0
A.点(20,50,30)为刀具的起点
B.程序起点
C.点(20,50,30)为机床参考点
D.程序终点
A.B17B5B17GxL1
B.B17000B5000B017000GxL1
C.B17000B5000B017000GyL1
D.B17000B5000B005000GyL1