• 已经不是首次实验制造的气管用于移植

    This is not the first time a lab-engineered trachea has been used for transplantation.

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  • 本文首次底部排气用于导弹,结合具有常规气动布局超声速导弹进行了底部排气方案设计,采用一种“底窝器”来提高进气道整流罩的底部压强,并进行风洞实验验证

    Then, the base bleed method is introduced on a general supersonic missile to decrease the base drag of the inlet cowl for the first time and is validated by wind tunnel test.

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  • 自然拼读首次用于艺术类院校大学英语教学中,通过实验测试,运用定量分析方法,对自然拼读法在大学英语词汇教学中的应用问题进行研究

    Applying Phonics teaching Method into the English teaching of Art College students for the first time, the author makes a study through experiments and tests by the way of quantitative analysis.

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  • 血管生成研究一个重要实验进展出现20世纪20年代当时透明首次用于实时观察进入动物肿瘤血管增长

    An important experimental advance in angiogenic research came in the 1920s, when transparent Chambers were first used to observe the growth of vessels into tumors in animals in real time.

    youdao

  • 血管生成研究一个重要实验进展出现20世纪20年代当时透明首次用于实时观察进入动物肿瘤血管增长

    An important experimental advance in angiogenic research came in the 1920s, when transparent Chambers were first used to observe the growth of vessels into tumors in animals in real time.

    youdao

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