parallel_ruler_有道手机词典

1.If there is a line passing the top of the ruler, and parallel to the equator, then the Angle between the line and the ruler is equal to the latitude here.
如果有一条线和赤道线平行，而且经过尺的顶端，这条线和尺的夹角就等于纬度。
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2.The utility model discloses a collapsible ruler, which is formed by the combination of two rulers glidingly assembled into integration; the two rulers face each other and are parallel mutually.
本实用新型公开了一种可伸缩尺，该伸缩尺由两个滑动装配成一体的直尺组合而成，两直尺相互正对且相互平行。
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