measurement of flow quantity
measurement of flow quantity
流量测量
以上为机器翻译结果,长、整句建议使用 人工翻译 。
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The measurement of flow quantity and velocity is the primary task of hydrological measurement, whereas it is much hard to design a meter with high precision and convenient usage.
河流流量和流速测量是水利测量的基础工作,然而设计测量精确而又使用方便的仪器比较困难。
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