The red flower black tea low-sugar drink is produced by adding red flower in the diffusion material of the ordinary black tea low-sugar drink.
而红花红茶低糖饮料是在普通红茶低糖饮料的浸提原料中增加了红花绒而新生成的一种红花红茶低糖饮料。
2
In the second part, a predator-prey model of ordinary differential with one-way diffusion is studied considering the monsoon, river flows, other natural conditions and living habits as background.