• This paper introduced a new type and special structured vacuum pump unit suitable for dry type reduced-pressure distillation.

    本文介绍适用减压蒸馏的特殊结构真空设备

    youdao

  • This paper introduced a new type and special structured vacuum pump unit suitable for dry type reduced-pressure distillation.

    本文介绍适用减压蒸馏的特殊结构真空设备

    youdao

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