transdermal
发表于 2025-3-30 09:12:41
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Cardioplegia
发表于 2025-3-30 12:51:12
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小卷发
发表于 2025-3-30 17:12:45
On the Structure of Ion-Exchange Resins,which it exchanges should be of the same size, hydration, and valency, and should have identical diffusion coefficients both in the external solution, and inside the homogeneous gel phase. Again for convenience we should wish the resin to show no preference for one ion rather than the other.