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铰链盖人孔
meaning in English
hinged manhole
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
铰链阀;片状阀
铰链盖
铰链杆
铰链钩
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