(来学网)可吸入性纤维指
  • A.
    (来学网)直径<2μ m,长度≥5μm
  • B.
    (来学网)直径<3μm,长度≥5μm
  • C.
    (来学网)直径<5μm,长度≥10μm
  • D.
    (来学网)直径<3μm,长度≥4μm
  • E.
    (来学网)直径<2μm,长度≥4μm