metal angle bead的用法和样例：
例句
- The curve plotted in this way would meet the boundary conditions given and all the polar curves embodied the same wrapping angle.
这一方法不仅保证了绘制的型线有给定的边界条件，同时保证了各型线有相等的包角。 - The cross air blow of spinning equipment, the spinning pack and the improvement of winding angle in take-up equipment were emphatically analysed.
重点分析了纺丝设备的侧吹风，纺丝组件以及在卷绕设备上卷绕包角上的改进。
