其原理中的“以时间测空间”的概念，突破了传统的栅式位移测量的概念，与传统栅式传感器相比，具有许多显著优点。
The theory of using time to measuring space has broke through the concept of the traditional grating type measuring in time grating sensor and has advantage in many aspects.
论文着重从以下几个方面进行介绍：首先从背景知识谈起，明确了框架的概念和优点：介绍了构件、领域工程等技术，以及这些技术与框架的关系；
This thesis starts with an introduction of the background knowledge and the framework reuse technology and its advantages followed by a description of component reuse, domain engineering and so on.
本文通过介绍与大客户系统有相似业务概念的用户回访系统的设计实现，说明中间件的通用性设计的重要性及优点。
This paper introduced a user return visit system, which is similar to big customer system in business concept. The importance and merit of general purpose pieces design in the middle tier are proved.
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