inner r span 内跨度
And the integrating raster with vector technology predigests the polygon overlaying operation, realizes inner span part vectorizing and speed up the process.
采用矢量与栅格结合的技术进行更新，简化了矢量多边形叠交运算，实现了图斑内部的局部矢量化，提高了处理速度。
So far we have entered the grand Meridian Gate and crossed the five bridges that span the Inner Golden River and the large first courtyard.
到目前为止我们已经进入午门，穿过与第一个院子交叉的金水河上的玉石桥。
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