A very helpful tool to define this dimension is a service classification system.
要定义这个维度，一个非常有用的工具是一个服务分类系统。
2
It provided a relatively standardized systemtool for oil service companies to seize the potential target market and improve market information archives.
为石油服务公司抢占潜在目标市场，完善市场信息档案提供了相对规范化的系统工具。
3
In foreign countries, Pavement Management System (PMS) is proved to be an efficient tool to allocate maintenance funds and maintain the service level of road network.