gradeline

名词 n.
中文释义

英文释义

名词 n.
  1. A longitudinal reference line or slope to which a highway, railway, or other infrastructure is built. It defines the intended grade or slope of the structure, ensuring proper drainage, safety, and functionality.
    — In valleys and depressions, embankments with side slopes of 1½ to 1, or about 33°, are raised to the grade line of the road; while the ridges and other prominences, occurring upon the route, are cut through to the same level, or grade line, leaving a surface width of 26 feet, and slopes upon the sides in the proportion of 1 to 1, or 45°.

词形变化

gradelines plural grade line alternative

词源

From grade + line.
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