短语词组短語gear shaft blank 齒輪軸毛坯spur -gear blank 正齒輪坯料gear blank for motorcycle 摩托車齒坯finish forging gear blank 精鍛齒坯bevel gear blank 錐齒輪坯料;錐齒輪胚料spiral bevel gear blank 齒坯BLANK GEAR 齒輪毛坯 返回 gear blank