短語詞組短語spur bevel gear 正齒繖齒輪;直齒繖齒輪;直齒圓錐齒輪spur -gear differential 直齒圓柱齒輪差速器differential spur drive gear 差速器傳動正齒輪roller spur bevel gear 滾齒直齒圓錐齒輪spur wheel gear 正齒輪Involute spur cylindrical gear 漸開線直齒圓柱齒輪Roller spur cylinder gear 滾切外齒輪 返回 spur gear