IP-based service network is divided into three planes, bearing plane, signaling plane and application plane.
本文将IP业务网络系统按照功能分为三个平面承载面、信令面和业务面。
In practical application, plane measuring instrument is mainly used to test flatness of workpiece in micro level, so that people can check if the workpiece is qualified or not.
在实际应用中，平面测试仪主要用于工件的微米级测试，从而检验工件是否合格。
In practical application, plane measuring instrument is mainly used to test flatness of workpiece in micro level, so that people can check if the workpiece is qualified or not.
在实际应用中，平面测试仪主要用于工件的微米级测试，从而检验工件是否合格。
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