• This paper analyzes the current drawing standards in China and compares some of them with old drawing standards in order to give attention in drawing.

    本文就我国标准目前的状况、新旧标准内容变化作了介绍,以便绘图引起重视。

    youdao

  • This paper analyzes the current drawing standards in China and compares some of them with old drawing standards in order to give attention in drawing.

    本文就我国标准目前的状况、新旧标准内容变化作了介绍,以便绘图引起重视。

    youdao

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