贡献 contribute; dedicate; devote; contribution 贡献大小 size of one's contribution; 贡献自己的一份力量 contribute one's share; do one's bit (for); 对某事有所贡献 contribute to sth.; 他决心把毕生精力贡献给科学事业。 he is determined to devote his life to sicence. 中国应当对人类作出较大贡献。 china ought to make a greater contribution to humanity
边际 (边界; 边缘) limit; bound; boundary 不着边际 wide of the mark; not to the point; irrelevant; 漫无边际 rambling; discursive
The contribution margin approach uses the product ' s unit con ? tribution margin of its contribution margin ratio , which give the increase in operating income for each additional unit sold or for each dollar of sales revenue , respectively 边际贡献法使用产品的单位边际贡献或他的边际贡献率,即销售量或销售额每增加一个单位时边际贡献的增长幅度。