With the proceeding of engineering graphics teaching reforming, some colleges built relative Web-based teaching systems one after another.

随着工程制图课程教学改革的不断深入，一些学校建立了相关的网络教学系统。

youdao

By the systems engineering optimizing theory and the course content, we deleted the redundancy and explored the new biochemistry teaching model so as to adapt the quick rhythm time of modernization.

以系统工程优化理论和教学内容、删去冗余。探讨适应现代快节奏时代的新的生物化学教学模式。

youdao