• A theoretical equation of surface wave grating diffraction on liquid metal surface is established based on hydrodynamic equations and grating diffraction principle.

    以流体动力学方程光栅衍射原理为基础,得到了研究液态金属表面特性理论方程序。

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  • When the other condition is the same, wave time for ultrasonic wave pass through the good and the flaw CFST are different, this thesis is based on theoretical principle to start the research.

    其它条件同时超声波通过有缺陷钢管混凝土缺陷的声时值相同,本文即以次为理论基础,开展研究。

    youdao

  • When the other condition is the same, wave time for ultrasonic wave pass through the good and the flaw CFST are different, this thesis is based on theoretical principle to start the research.

    其它条件同时超声波通过有缺陷钢管混凝土缺陷的声时值相同,本文即以次为理论基础,开展研究。

    youdao

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