The paper introduces a new method of cross measuring by (el ec tric) theodolite, a new way of cross section area computation is also presented.
介绍利用（电子）经纬仪进行横断面测量的一种新方法，并提出横断面截面积计算的一种新思路。
Cross section area decreases and inclined Angle increases respectively when filling length increases, and the change becomes more obviously near the entrance.
熔体截面面积随充型长度的增大而减小，而熔体截面倾角随充型长度的增大而增大，这种变化在型腔入口附近表现得更加明显。
The distribution law of horizontal cross section area of ring forging and ring blank is put forward to describe the rolling formability of conical ring with inner steps.
对内台阶锥形环件轧制难度进行了分析，提出用环件锻件和轧制毛坯的水平横截面积分布规律来描述内台阶锥形环件的轧制难度。
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