After adjusting the check, you can determine the longitudinal slope line. The so-called fixed slope is the slope value, slope position (pile number) and elevation determined. Slope value is generally used to push the parallel triangle plate method, directly read the grid grid, the required value to 1/1000. The position of the slope of the slope is directly read out from the map, which is generally adjusted to the 10 position of the whole. The elevation of the slope of the slope is based on the design elevation of the course starting point, which is determined by the fixed slope and the slope length.
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