acid diffusion 光酸扩散
The mix of humic acid with diffusion agent N have good effect too.
当采用扩散剂N时，与腐殖酸混合使用效果也较好。
Acid flow and reaction in a wormhole was studied by modeling the wormhole as a cylinder and numerically solving the mass balance equation that describes acid transport by convection and diffusion.
将酸蚀蚓孔简化为单圆管模型，酸液流动反应物质平衡方程反应传质和扩散作用。
Conclusion: The fluorouracil release from microspheres with polylactic acid as carriers was controlled by drug diffusion and polymeric erosion.
结论：氟尿嘧啶微球体外释药以药物扩散和材料降解为主。
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