Based on practice, introduces a way how to implement a dynamic showing of multilevelstructure map and remark map by layer in homepage courseware.
基于实践，介绍了网页式课件中，利用层来实现多级结构图的演示及注释说明式图片的一种方法。
2
A nested multilevelstructure of BOM is presented to describe the construction of product and half product, which actualizes the mutual alteration in the BOM designing.
该模型采用多层嵌套BOM表的方式描述产品的结构，实现了产品、半成品BOM的灵活的联动设计。
3
Electron - beam lithography with a novel multilevel resist structure defines the pattern.