Methods: During the treatment simulation, get the patients simulator film and the computer location image at the same time.

方法：住院需放疗的肿瘤病人经模拟定位后， 即拍X线片，同时电脑采集定位图像。

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The virtual image is then positioned "under" the cell such that the cell's upper-left corner is positioned at the correct location in the virtual image.

虚拟图像然后就被定位在一个单元“之下”，这个单元的右上角被定位在虚拟图像中的正确位置。

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The difference is between actively sharing information -- uploading an image with location data, checking into a restaurant or other business -- and passively sharing it (what the tech companies like to call "frictionless" sharing).

CNN: Facebook Home, privacy and you

That makes the precise location of the surface where the image is to be formed much less important, because any particular plane at any given location will receive more or less the same pattern of light rays.

ECONOMIST: MONITOR

She said Totnes, which is known for its alternative lifestyle image, seemed the ideal location for her feline therapy cafe.

BBC: Totnes cat cafe plan criticised by animal charity