2009年，美国提供全方位服务的餐馆的销售额下降了6%以上，但快餐连锁店的总销售额却保持不变。
In 2009 sales at full-service restaurants in America fell by more than 6%, but total sales remained about the same at fast-food chains.
福西厄斯•墨卡托的投影于1569年问世，马上就派上了用场，因为它把不变的方位描绘为直线，这对航海非常方便。
Gerardus Mercator's projection, published in 1569, was immediately useful because it depicts a line of constant bearing as a straight line, which is handy for Marine navigation.
并利用图像质心不变的假设，解决了线性相位引起的图像方位位置偏移问题。
More, based on the assumption that image cancroids is changeless, we resolve the image azimuth shift problem caused by linear phase errors.
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