翻译 the magnitude and the direction of the maximum rate of increase of V at the point P（1,2,3）
问题描述：
翻译 the magnitude and the direction of the maximum rate of increase of V at the point P（1,2,3）
答
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答
the magnitude and the direction of the maximum rate of increase of V at the point P（1,2,3）
规模和增加的V最大速率点P（1,2,3）方向