2.用SIMENS循环编写图示零件四个键槽程序。N10G0G19G90T1D1S800M3N20G54Y0Z50X0N30R101=5R102=1R103=3R104=-4R116=13.5R117=0N40R118=14R119=10R120=5R121=2R122=50N50R123=100R124=0.5R125=0R126=2R127=1N70G259RPL45N80LCYC75N90G254RPL90N100LCYC75N110G259RPL90N120LCYC75N130G259RPL90N140LCYC75N150G259RPL45N170G0Y0Z200X0M05T2M6S600M3R101=5R102=1R103=2R104=-8R105=0.2G0X18.029Y18.029LCYC82X-18.029Y18.029LCYC82X-18.029Y-18.029LCYC82X18.029Y-18.029LCYC82M2