• 1961年,北京第二机床厂开始采用气体氮化淬火

    In 1961, the Beijing second machine tool plant began using gas nitriding quenching.

    youdao

  • 但是清华大学、北京大学恐怕不能这样不是所有大学都要上海机床厂道路。

    But I'm afraid Qinghua and Beijing Universities can't be run along these lines. By no means should all colleges and universities follow the example of the Shanghai Machine Tool Plant.

    youdao

  • 但是清华大学、北京大学恐怕不能这样不是所有大学都要上海机床厂道路。

    But I'm afraid Qinghua and Beijing Universities can't be run along these lines. By no means should all colleges and universities follow the example of the Shanghai Machine Tool Plant.

    youdao

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