求翻译：几年前仅仅在几种“贵族”千兆产品中才能见到的技术，如堆叠性、QoS保证、可管理性、安全性等，今天，在任何一款普通的千兆产品中均已经实现，此外，能提供弹性堆叠、模块化设计、支持IPv6、高密度千兆端口、多层交换能力、支持路由协议、支持万兆上连、在一台设备中同时支持铜缆、光纤和双绞线……不断成为千兆设备中的主流和通用功能是什么意思？

Only a few years before the technology can be seen in several "aristocratic" Gigabit stackability, qos assurance, manageability, security, and today has been achieved in an ordinary Gigabit products In addition, to provide resilient stacking, modular design, support ipv6, high-density Gigabit port,

Several years ago just a few of the "aristocratic" 1000 gigabit products in order to see the technology, such as stacking, QoS assurance, security, manageability, and so on, today, in any of the ordinary in 1000 gigabit products has been achieved, in addition, it is possible to provide a flexible, m

Several years ago merely the technology which “the aristocrat” in a milliardfold product can see in several kinds

Years Qian just in several "nobles" thousand trillion products in the to see of technology, as stacking sexual, and QoS guarantee, and can management sexual, and security,, today, in any a paragraph General of thousand trillion products in the are has achieved, in addition, can provides elastic stac