The reference map provides a cloud-free view to illustrate Earth’s orientation in the image.

参考图给出了一个无云的视角来表明图中地球的方向。

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It serves as a domain analysis reference map and is emerging as the common business language of the telecom industry.

eTOM可作为领域分析参考图，正在逐渐成为电信行业的通用业务语言。

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The method of regional geomagnetic field modeling is adopted in order to prepare for the reference map of geomagnetism-aided navigation and positioning.

针对性对地磁辅助导航定位中基准图制备的需要，采用了建立区域地磁场模型的方法。

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The signs contain the place name and a map reference which people can give coastguards when reporting an incident.

BBC: South West Coast Path gets 500th 'life-saving' sign

Each missile comes with a terrain contour matching radar, which compares a stored map reference with the actual terrain to fix the missile's position.

BBC: Tomahawk cruise missile