And so the distance that it will travel in horizontal direction is four times that-- twice because the time has doubled and another factor of two because the horizontal component has also doubled.

因此水平移动距离,扩大了四倍,因为除了时间加倍了之外,还有另外一个自变量,速度水平分量也加倍了。

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The main factor for ranging distance is high precision time delay.

时延测量精度是制约距离测量精度的主要因素。

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Research results showed that the surface shape factor was not a constant value, but a variable value with the change of irrigation time, water advance distance and other factors.

研究表明同一次畦灌过程中地表储水形状系数并非恒定值，而是随灌水时间和水流推进距离等因素变化的。

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