exponential dilutionflask

例句：

1. 1. The concentration of the solution isexponentially increasing.
   溶液的浓度指数级增加。
2. 2. The rate of dilution isexponentially decreasing with time.
   随着时间的增加，稀释速率指数级减少。
3. 3. The exponentialdilution model is widely used inchemical engineering.
   指数稀释模型在化工工程中广泛应用。