市场规模及构成 通讯技术的迅速发展,使美国电话机及相关产品市场新产品层出不穷,尽管产品平均单价不断下降,但市场规模仍持续扩大。据统计,1994年美国电话机及相关产品发货额增长8.1％,达47亿美元,主要热门产品如无绳电话机、答录器、传真机及通话者身分鉴定装置等市场十分活跃,1994年美国电话机及 Market Size and Composition The rapid development of communications technology has resulted in an endless stream of new products in the US telephone and related product markets. Although the average unit price of products has continued to decline, the market size continues to expand. According to statistics, in 1994, the volume of telephones and related products shipped in the United States increased by 8.1% to $4.7 billion. Major markets such as cordless telephones, answering machines, fax machines, and caller ID devices were very active. 1994 American telephones and