Provide a dividingguide card for every twenty to thirty folders.
每二十至三十个文件夹分别建立目录导卡。
2
The module guide should have a tree structure, dividing the system into a small number of modules and treating each such module in the same way until all of the modules are quite small.
组件支配应该是一个树形结构，将系统分为少量的组件，每个组件处理方法一致，直到所有组件都变得很小。
3
A slant Angle of the dividing surfaces is set to one at which the light projected from the light source is reflected in a direction substantially parallel with a plate of the light guide plate.