A.加速 B.勻速 C.減速 D.變速
A.0.10mm B.0.20mm C.0.15mm D.0.25mm
A.減速機構(gòu) B.轉(zhuǎn)向齒條 C.轉(zhuǎn)向扭桿 D.橫直拉桿