A.梯形收縮齒 B.梯形等高齒 C.尖齒 D.鋸齒形齒
A.槽形角ε B.180°/Z C.90°/Z D.36°
A.0.1~0.2mmB.0.2~0.3mmC.0.2~0.4mmD.0.1~0.3mm