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铰链式人孔盖
meaning in Chinese
hinged manhole cover
Related Words
形铰链
丁字铰链
伸缩铰链
肘铰链
窗铰链
铰链的
字形铰链
铰链端
水平铰链
平板铰链
铰链式球面阀
铰链式人工膝关节
铰链式升降辊道
铰链式套管卡瓦
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