美国联邦应急管理署（FEMA）发布了一张用“洪峰基线海拔”（BFE）描绘洪涝频发重灾区轮廓的地图。
The Federal Emergency Management Agency (FEMA) publishes maps that designate Special Flood Hazard Areas delineated by a Base Flood Elevation (BFE).
该文提出了一种根据设计断面中“地基线”和“工程轮廓线”来计算挖填方量的算法。
We present the algorithm according to the configuration line and ground line of cross section.
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