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由李文杉提出的T_0梯度法,在二层楔形模型下,给出了一种由T_0时间平面图直接构制等深线构造图的精确而简洁的步骤。但该文因局限于当时的背景,在方法的
According to the T_0 gradient method proposed by Li Wensong, an accurate and concise procedure of directly constructing a contour map of isobaric line from the T_0 time-plan is given under the two-layer wedge model. But the text is limited to the background of the time, in the method