短語詞組短語bearing ring seal 軸承密封;滑環(huán)密封bearing cap seal 軸承罩密封bearing sleeve seal 軸承座套式密封rolling bearing oil seal 滾動軸承油封crank bearing oil seal 曲柄軸承護油圈document bearing official seal 公印文書bearing annular seal 軸承環(huán)形密封Bearing This Seal 這印記drum bearing housing seal 鼓形軸承殼密封 返回 bearing seal