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Described are basic principle and construction of tubular seal.
论述了管式密封基本原理和基本构成。
youdao
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The technology for construction of steel tubular pile caps is described in the this paper.
文章主要介绍钢管桩桩帽的施工工艺。
youdao
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The technology for construction of steel tubular pile caps is described in the this paper.
文章主要介绍钢管桩桩帽的施工工艺。
youdao