The traditional telephony system or IP network is depicted as a silo structure, which is comprised of proprietary black box solutions closely coupled with network Equipment Providers (NEP) hardware.
传统的电话系统或ip网络描述为竖井(silo)结构，由与网络设备提供商(Net work Equipment Providers,NEP)硬件紧密偶合的专用黑盒解决方案组成。
DuPont "s performance by the world" s sixth into third in the world, with production bases in many countries and agents, DuPont has formed a global marketing network and its own proprietary system.
美国杜邦的业绩已由世界第六进入第三，在世界多个国家设有生产基地和代理，美国杜邦在全球已形成自己的营销网络和专卖体系。
DuPont "s performance by the world" s sixth into third in the world, with production bases in many countries and agents, DuPont has formed a global marketing network and its own proprietary system.
美国杜邦的业绩已由世界第六进入第三，在世界多个国家设有生产基地和代理，美国杜邦在全球已形成自己的营销网络和专卖体系。
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