短語詞組短語internal serration 內(nèi)細(xì)齒external serration 外細(xì)齒SERRATION BOLT 鋸齒狀螺絲serration pitch 鋸齒節(jié)距Serration pattern 鋸齒方式Serration Frequency 切屑形成頻率serration shaft 鋸齒形花鍵軸;鋸齒軸;細(xì)齒軸;三角形齒花鍵軸Serration width 鋸齒狀的寬度 返回 serration