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。
It provided a relatively standardized system tool 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。
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.
在国外，路面管理系统已经被证明是一个统筹养护资金分配，维持路网服务水平的有效工具。
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