• 2022-05-27
    弗克扩散定律的公式,哪个是准确的表述:
    A: [img=78x42]18034ae42949b88.png[/img]
    B: [img=68x42]18034ae433f1049.png[/img]
    C: [img=75x44]18034ae43e8fd99.png[/img]
    D: [img=68x42]18034ae44981714.png[/img]