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。
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。
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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