关于数控机床的,写出下列程序各语句的含义,并绘出其加工零件的图形!

关于数控机床的,写出下列程序各语句的含义,并绘出其加工零件的图形!
N10 G90 G92 X0 Y0 Z30;
N20 G00 G00 X40 Y35;
N30 Z2 S1000 M03;
N40 G01 Z-2 F50;
N50 G03 X35 Y40 I-5 F100;
N60 G01 X15;
N70 G03 X10 Y35 J-5;
N80 G01 Y30;
N90 G03 X15 Y25 I5;
N100 G01 X35;
N110 G02 X40 Y20 J-5;
N120 G01 Y15;
N130 G02 X35 Y10 I-5;
N140 G01 X15;
N150 G02 X10 Y15 J5;
N160 G00 Z30 M05;
N170 X0 Y0;
N180 M02；