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我国基本比例尺地形图是以国际百万分之一地图分幅为基础，按一定的经差和纬差划分图幅。
Basic scale topographic map is bases on one of million international map subdivision and divided by Longitude difference and Latitude difference.
天文时纬残差震前异常是一种相当普遍的现象。
Anomalies of astronomical time-latitude residual before earthquakes are considerably general phenomena.
在赤道这一标准差是0.5%，这就是说在30天间隔纬向平均反射率增加1%，在95%水平时统计上是显著的。
This means that a zonal mean albedo increase of 1% for a 30-day interval is statistically significant at the 95% level.
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