• 利用超声波检测液位位、厚度探测水下地形一种准确经济方法

    It is an accurate and economic way to use ultrasonic to measure liquid level, material level and thickness and topography under water.

    youdao

  • 利用超声波检测液位位、厚度探测水下地形一种准确经济方法

    It is an accurate and economic way to use ultrasonic to measure liquid level, material level and thickness and topography under water.

    youdao

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