体育竞技运动有“时间差”。商品市场上的竞争是竞争者之间智慧与力量的较量,是用产品去争夺消费者的搏击。产品开发的“时间差”,同样是值得企业认真研究的重要战术。产品开发的“时间差”的基本形 Sports competition has a “time difference.” The competition in the commodity market is a contest between the wisdom and strength of the competitors, and it is the use of products to compete for the fight of consumers. The “time difference” in product development is also an important tactic worthy of careful study by companies. The “time difference” basic form of product development