个人需求函数的英文：
individual demand function

The quality of being an individual;individuality.
个性作为单个人的特点；个人特征

Individualism untempered by social responsibilities.
利己主义与社会责任不可调和。

Gould was an intensely private individual.
古尔德曾是个相当孤僻的人。

It is the demand, stupid.
傻瓜，答案是需求。

Demand exceeds supply. The supply is not adequate to the demand．
供不应求

I demand a recount.
我要求重算。

function requester
功能请求者

norm functional
范数泛函

The divergence of a vector function is the scalar function
矢量函数的散度是一个标量函数。