contributions贡献contributionn.贡献；捐款(赠)；投稿contribution margin per composite unit每个组合单位的贡献毛利contribution rate of technical progress技术进步贡献率contribution to national economic growth国民经济增长贡献Contribution of Confucius to Compositions孔子对文章学的贡献Contribution of Ampere to electromagnetics安培对电磁学的贡献contribution weight superposition approach贡献权重迭加法contribution rate of technological progress技术进步贡献率contribution margin in break-even analysis[经] 保(够)本分析中的贡献毛益contribution rate of technological advancement技术进步贡献