Patent application not only has a positive relation with the current year's gross profit, but also has the lag effect of 1-2 years on gross profit.
专利申请量不但与当年主营业务利润显著正相关，而且对随后的主营业务利润还存在1-2年的滞后效应。
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This paper makes a positive analysis of the relation of revenue increase and economic growth in Guangxi province applying regression model, auto-regressive and dynamic distributed lag models.
Total level or real composites in Chinas agricultural infrastructure stock have relatively big and everlasting positive effects on Gross National Product and have relative short time-lag.