请在括弧中填写出对应程序段的解释说明或补充未完成的程序。然后判断出刀具切入切出的路线是什么。 % N10 G90 G54 G00 X70.0 Y1.Z100.0; N12 S1000 M03; 解释:(______) N18 Z10.0; N20 G01 Z0.00 F300.0; N22 G41 D01 Y30.0 F500.0; 解释:(______) N24 G03 X40.0 Y0 I0 J-30.0; N26 G01 Y-35.0 F1000.0; N28 G02 X35.0 Y-40.0(I______J______); N30 G01 X-35.0; N32 G02 X-40.0 Y-35.0 R5.0; N34 G01 Y35.0; N36 G02 X-35.0 Y40.0 R5.0; N38 G01 X35.0; N40 G02 X40.0 Y35.0 R5.0; N42 G01 Y0; N44 G03 X70.0 Y-30.0 130.0 J0 F500.0; N46 G40 G01 Y0; N48 Z10.0 F2000.; N50 G00 Z100.0.M05; 解释:(______) N52 M30; %