The principles, methods and process of automated extraction of natural stream networks of watershed based on raster DEM are described.

论述了如何基于栅格dem自动提取流域自然水系的原理、方法和流程。

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Google has marked today's lunar eclipse with a special 'doodle' and live video stream to show the progress of the natural phenomenon.

为了纪念今天的月全食，谷歌推出了一个特别的“涂鸦”，用实时视频流展示了这一自然景观的全过程。

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A natural pass (elevation 1, 640 feet [500 metres]) that was cut through the Cumberland Plateau in the eastern United States by former stream activity.

自然形成的坎伯兰山口(海拔1640英尺[500米])曾经是水口，峡谷中的水流沿山口穿过美国东部的坎伯兰平原。

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Sabrina The Lady is only rescued once the attendant spirit -- calls on the nymph Sabrina, the genius loci -- the natural spirit of the Severn stream, which is the river that separates England from Wales.

只有随从号召美丽的少女,和一个天才的场所-,它是赛文河流的自然精神，是分割英格兰和威尔士的河流。

耶鲁公开课 - 弥尔顿课程节选

Yet the space the elegant new galleries stream with natural light manages to celebrate the peculiar expansiveness and exuberance of American art.

WSJ: American Idyll

They are widely regarded as a world-class natural attraction containing marvellous stream passages formed by three rivers that sink underground on the slopes of Cuilcagh Mountain.

UNESCO: Olympic torch carried through iconic Geopark

Fractionators take a mixed stream of natural gas liquids (the liquid stuff that comes out of the ground along with natural gas) and process it into pure products like ethane, propane and butane.

FORBES: Explosions And Fire Rock Gas Plant Near Houston