FCH File Count High

用法例句

These pattern,the paper believes,will not only improve operation conditions for design database document,but also raise efficiency for drawing circuit principle function diagram and printing circuit board diagram.

介绍了Protel99SE软件的基本功能及设计流程,总结了Protel99SE软件系统的实用设置方法,对改善设计数据库文件的操作环境、提高绘制电路原理图及印制电路板图的效率具有实际意义。