• 通过天平测试得到了节段模型三分系数

    The three-component coefficients of section model of You-Cha Bridge were obtained by using two five-component balances.

    youdao

  • 通过天平测试得到了节段模型三分系数

    The three-component coefficients of section model of You-Cha Bridge were obtained by using two five-component balances.

    youdao

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