铺地坡向图

提示词

在原铺地平面上对应已确认坡向、低点和排水构件，箭头用于图示而不是新铺地图案。边界、接缝及标高保留，缺少坡度数据不凭明暗估算。

Match approved falls, low points, and drainage elements to the original paving plan, treating arrows as diagram graphics rather than paving patterns. Preserve boundaries, joints, and elevations without estimating missing gradients from shading.