The designing and developing of network coursework is a systematical project with its own rules and principles.

网络课件的设计开发是一个系统工程，有其自身的规律和原则。

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The designing and developing of network coursework is a systematical project with its own rules and principles.

网络课件的设计开发是一个系统工程，有其自身的规律和原则。

youdao