Abstract: To perform precise measurement on mega gears, the principle of mega-gear in-site measurement system with laser tracker and corresponding key techniques are originally introduced.

摘要：为了实现特大型齿轮精密测量，介绍了作者提出的特大型齿轮激光跟踪在位测量原理，重点阐述了其中的几项关键技术。

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For example, a user can browser the portal Web site in English, but they can set their measurement format or calendar format to Simplified-Chinese.

例如，用户可以浏览英语门户网站，但可以将度量衡格式或日期格式设置为简体中文。

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It can be used for on-site temperature measurement in harsh environment, and has good application prospects.

它可用于在恶劣环境的现场温度测量，并具有良好的应用前景。

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