The total net value of all goods and services produced within a nation over a specified period of time, representing the sum of wages, profits, rents, interest, and pension payments to residents of the nation.国民收入：在一特定时期内，一国所有商品和服务生产所得的纯收入的总和，包括雇员酬金、利润、租赁收入，利益，和本国公民的养老金额的总和