许多消费性的电子商品,拜科技进步之赐,不但推出的周期越来越短,商品形式也更具多样化。但相对地,新品购入时便已开始一步步走向落伍淘汰。常听一些用家说:“我才不到半年前所购买的某某器材,如今所出的后续机种,不但功能更强、外观更漂亮,而且价格还比上一代机种便宜”之类的话。尤其以目前市面上所出现的DVD机,几乎以一个月一到两款的速度上市,不但外观做工一部比一部完美,功能及配备一台还比一台先进,这让已经 Many consumer electronic products, thanks to advances in science and technology, have not only introduced shorter and shorter cycles but also diversified commodity formats. However, on the other hand, new products have already begun to be eliminated step by step. Often listen to some users, said: “I was less than six months ago to buy a certain equipment, now the follow-up models, not only more powerful, more beautiful appearance, and the price is cheaper than the previous generation,” and the like if. Especially in the current market appeared on the DVD machine, almost one to one or two models listed, not only the appearance of a workmanship is more than a perfect, functional and equipped with a more than one advanced, which allows already