利用超声波检测液位、料位、厚度和探测水下地形是一种准确、经济的方法。
It is an accurate and economic way to use ultrasonic to measure liquid level, material level and thickness and topography under water.
利用超声波检测液位、料位、厚度和探测水下地形是一种准确、经济的方法。
It is an accurate and economic way to use ultrasonic to measure liquid level, material level and thickness and topography under water.
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