Testing with paper or black mark testing function supply beforehand printing bill positioning printing?
带纸将尽检测或黑标检测功能，支持预印刷票据定位打印？
In such cases, this paper designs a multi-function automobile data recorder which can realize the vehicles positioning and navigating.
针对这一热点问题，本文设计开发了一套能实现汽车行驶记录和定位导航功能的多功能汽车行驶记录仪。
The basic principle, designing idea and the function diagrams of the microwave intelligent positioning system for electric train are presented in this paper.
本文介绍电力列车微波智能定位系统的基本工作原理、设计思想及方框图。
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