原有投资 meaning in English

original investment

For this interface unframed mode transparently transports the tdm frame without any attempt at interpreting the data , it seamlessly interfaces to all existing pbx equipment . this method is evolutionary rather than revolutionary , and it farthestly protects inhere investment . so it is an ideal complement to voip
与voip技术相比，本文的实现思路是一种渐进的非革命性，可以最大限度的保护在tdm设备上的原有投资，因此，它是对voip技术的一种有益的补充。
A lot of low performance web servers are united to a high one . it costs low and may extend based on the primary invest . it adapts to the web site that operation scale ca n ' t sure or middle and small web site update to a great one
Webserver集群是改善web服务器性能的一种有效的解决方案，它是把多台性能较低的服务器用局域网联成一个性能较高的整体，实现起来成本较低，而且可在原有投资基础上进行扩展，适合业务规模不大确定的站点，或者中、小型站点向大站点升级，因而易被人们接受。