同时，产业内贸易福利是否增进也依赖于双方贸易产业的外部报酬递增弹性的大小。
Meanwhile , gains in trade within industry also depend on the flexible range of external payment increase in both parties ' trade industry .
外部效应、报酬递增与产业内贸易
The External Effect , Payment Increase and Trade within Industry
外部报酬