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拱砖管
meaning in Chinese
generating tube
Related Words
横向拱
缺口拱
拱石
向上拱
回廊拱
弧拱
板拱
塌落拱
端拱
抑拱
拱助
拱砖
拱砖管, (蒸汽锅炉的)热水管
拱状
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