再生产

The development history of world airlines is that airlines produce and merger and then reproduce and remerge again.

世界航空公司发展史是航空公司生产、,生产、的历史。

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】经济可持续发展生产正常进的一般条件 ,就是它的每种流量的输入量 ,都于输出量。