golden standard 是什么意思

	1.	It is still the golden standard that identifying the apoptotic cells by using transmission electron microscopy 用透射电镜进行超微结构观察仍是鉴定细胞凋亡的金标准。
	2.	Its cipher code is basically the golden standard of internet security , and it doesn ' t sell subscriber lists （它的密码在网络安全上可称得上是金牌标准，而且它不出售用户名单。）
	3.	T ： its cipher code is basically the golden standard of internet security , and it doesn ' t sell subscriber lists （它的密码在网络安全上可称得上是金牌标准，而且它不出售用户名单。）
	4.	Reviewing the history , the system of foreign exchange evolves from golden standard to bank paper standard , from fixing to floating , experiencing many changes 回顾历史的发展，由最初的金本位制到纸币本位制、从固定汇率制到浮动汇率制，已经经过了多次的历史变革。
	5.	The u . s . once dominated in the development of robots designed for service and industry but now other countries are catching up and even passing the old golden standard 该结果显示，美国曾经主宰了服务领域和工业领域的机器人开发，但是现在其它国家却迎头赶上，甚至还超过了美国。

golden standard是什么意思