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。
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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