名词
中文翻译：圆周扇区
同义词：
['circumferential sector', 'sector circle']
例句：
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1.The circular sector of the earth's orbit is about 23,870 miles wide.
地球轨道的圆周扇区大约宽23,870英里。
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2. The satellite's circular sector was pointed directly at the sun.
这颗卫星的圆周扇区直接指向太阳。
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3.The spacecraft's circular sector was used to collect data from the planet's surface.
宇宙飞船的圆周扇区用于从行星表面收集数据。