The paper derived a light equation for cone-lens.
本文推导了一个锥透镜的光线方程。
Model analysis method with cone shell element for axisymmetric shell is discussed in this paper.
本文选用锥壳单元，介绍了轴对称旋转壳模态分析方法。
Step 3: Pour the chocolate into a cone made of grease paper.
第三步：将巧克力倒进油纸做成的圆锥体中。
Step 3: Pour the chocolate into a cone made of grease paper.
第三步：将巧克力倒进油纸做成的圆锥体中。
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