主程序（xù）：
%0068
N10 G54 X0 Y0 Z50
N15 G90 G17 M03 S600
N20 G43 Z-5 H02
N25 M98 P200
N30 G68 X0 Y0 P45
N40 M98 P200
N60 G68 X0 Y0 P90
N70 M98 P200
N20 G49 Z50
N80 G69 M05 M30
%200
N100 G41 G01 X20 Y-5 D02 F300
N105 Y0
N110 G02 X40 I10
N120 X30 I-5
N130 G03 X20 I-5
N140 G00 Y-6
N145 G40 X0 Y0
N150 M99
