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Anti-haze masks under an electron microscope: Will masks become ineffective if they become black?

  • Categories:Health | Medical
  • Author:
  • Origin:
  • Time of issue:2019-12-17 23:16
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(Summary description)电子显微镜下的防霾口罩：口罩变黑是否就失效了？

Anti-haze masks under an electron microscope: Will masks become ineffective if they become black?

(Summary description)电子显微镜下的防霾口罩：口罩变黑是否就失效了？

  • Categories:Health | Medical
  • Author:
  • Origin:
  • Time of issue:2019-12-17 23:16
  • Views:

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