短語詞組短語ball and ring test 球環(huán)試驗ball and ring method 環(huán)球法;翻譯ball and ring apparatus 球環(huán)軟點測定器;翻譯ball -ring mill 環(huán)球磨ball distance ring 滾珠軸承座圈;滾珠軸承圈;滾珠護(hù)圈Ball & Ring 球環(huán)法double row ball race ring 雙列滾珠軸承座圈Ball bearing outer ring 球軸承外圈ball head hanging ring 球頭掛環(huán) 返回 ball ring