O0255
G99 T0101 M8;
G96 S150;
G50 S1900 M3;
G0 X80 Z80;
G0 X22.5 Z3;
G71 U1.5 R0.3;
G71 P1 Q2 U0.3 W0.08 F0.25;
N1 G0 X5;
G1 Z0 F0.3;
G1 X10 Z-10 F0.16;
G1 Z-15 F0.18;
G3 X16 Z-18 R3 F0.15;
G1 Z-30F0.18;
G1 X19 F0.16;
G1 X21 Z-31 F0.08;
N2 G1 Z-43.1 F0.18;
G0 X22 Z60;
S165 T0202;
G0 X22.5 Z3;
G70 P1 Q2;
G0 Z60;
T0202;
G0 X6 Z1;
G94 X-0.3 Z0 F0.19;
G0 Z60;
T0303 S70;
G0 X22 Z-43;
M98 P0256;
T0101;
G0 X80 Z80;
M30;
G54 G55怎么用
能举例说明吗