2. profit margin: 利润率 A profit margin is the amount that is made in a business after the costs have been subtracted.3.indrect involvement :间接参与join a business by means of assistant or other coumunication tools.4.marketing mix: 销售组合The marketing mix is generally accepted as the use and specification of the 4 Ps describing the strategic position of a product in the marketplace.5.dual price:双重价格Selling the same or identical product at different prices in different markets. It may indicate an intention to engage in dumping.6.consumer product:消费产品Merchandise or other item of common or daily use, ordinarily bought by individuals or households for private consumption. See also consumer goods.7.channel length:沟道长度Number of individual entities comprising the channel of distribution between the producer and the consumer. See also channel width.8.medium:媒介a means or instrumentality for storing or communicating information.9.personal selling:个人销售Face to face selling in which a seller attempts to persuade a buyer to make a purchase. Personal selling is as old as commerce itself。10.public relations: 公共关系Systematic effort to create and maintain goodwill of an organization's various publics (customers, employees, investors, suppliers, etc.), usually through publicity and other non-paid forms of communication. These efforts may also include support of arts, charitable causes, education, sporting events, etc.