The paper offers the method to the choice of chaining the route of the webpage under the multi-layer catalogue, and offers reference to webpage making, website managing.
本文对多层目录下网页链接路径的选择提供了方法，为网页制作、网站维护提供参考。
The particle route method is produced for the shear force diagram drawing of multi-span beam based on the geometric principle of the force addition.
基于力的合成的几何法原理，提出了绘制多跨梁剪力图的质点路线法。
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