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条假想

条假想

条假想

条假想

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The track of the revolution of the earth is called ecliptic , and the imaginary circle vertical to the earth's axis is called equator .

地球围绕太阳运行的轨道叫 “黄道 ”，在地球中央有一条假想的与地轴垂直的大圆圈，这就是赤道。

3

The earth 's axis is an imaginative line between the north and south polar and the equator divides the north and south hemisphere .

地球的轴心是介于南北极之间的那条假想的线；赤道是南北半球的分界线。

4

from the wave viewpoint , a ray is an imaginary line drawn in the direction in which the wave is traveling.

从波动观点来看，一条光线是一条假想的、按波行进方向画出的线。

5

If there is a gap in a segment , draw an imaginary line to close it .

如果段中存在间隙，则绘制一条假想线来使它封闭。

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