Economy can grow the general condition of reproduction on the rails continuously, it is the input quantity of every kinds of its discharge, must be more than sendout.

【摘要】经济可展再生产正常进行的一般条件 ,就是它的每流量的入量 ,都必须大于出量。

In addition, input of material of average per capita is more than year of increase rate of population of the corresponding period apparently with year of increase rate of sendout.

此外 ,人均入与出量的年增长率明显大于同期人口的年增长率。