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凹垫圈
meaning in Chinese
cupped washer
Related Words
纺织机用皮垫圈
窝凹
成凹
凹坡
凹出
凹缝
凹光栅
凹创
凹切
凹域
凹点性指甲
凹垫层宝石
凹电阻元件
凹雕
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