diffusion ratio

例句：

1. 1. The diffusion ratio of this new drug is 20% higher than that of the previous version.
   这种新药的扩散比例比前一版本高20%。
2. 2.The diffusion ratio of carbon dioxide in the atmosphere is a key factor in global warming.
   大气中二氧化碳的扩散比例是全球变暖的关键因素。
3. 3. The diffusion ratio of the new vaccine was tested on volunteers before it was released to the public.
   在疫苗公开之前，对志愿者进行了新疫苗扩散比例的测试。