The main research contents of this dissertation are summarized as follows: (1) The basic theory of GPS positioning~ the method of GPS precise positioning and the source of its error are briefly introduced in the paper.
主要研究内容概述如下： （1）简要介绍了GPS定位的基本原理、GPS精密定位的方法及其误差来源分析。
参考来源 - GPS精密高程测量理论与方法及其应用研究The precise positioning of PCB benchmark hole is the key to PCB processing accuracy.
PCB板基准孔的精确定位是保证PCB加工精度的关键。
参考来源 - 基于单片机的印制电路板智能定位冲孔系统Control system design and analysis of EUVL stage. Based on the mechanism above designed, control model and strategies are built to realize both precise positioning and synchronous scanning.
设计了工件台控制系统,针对工件台的精密定位和同步扫描提出了相应的控制策略。
参考来源 - 极紫外光刻机工件台精密机械及控制相关技术·2,447,543篇论文数据，部分数据来源于NoteExpress
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This required precise positioning to locate the legs into the stabbing guides of the lifting cradle.
这需要精确的定位，以便将支腿定位到提升架的扶正导轨中。
Can detect brain lesions area, patients and precise positioning.
可以检测出患者脑部的病灶区，并进行精确的定位。
This enables very precise positioning of the label on the product.
这可以使产品的标签获得非常精确的定位。
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