discrepancy in elevation
... discrepancy in closing 闭合差 discrepancy in elevation 高差 discrepancy tag 偏差标签 ...
altitude difference
... algebraic difference 代数差 altitude difference 高差; 高程差; 高度差 amplitude difference (相邻二取样点之间的)幅度差 ...
level difference
... 水准测段segment of leveling 高差difference of elevation;level difference 附合水准路线annexed leveling line ...
高差是两点间高程之差,即终点高程减起点高程。用高程测量方法测出未知高程的点时,先从已知高程点测出两点的高差,再计算出未知高程点的高程。未知点比已知点高,两点的高差为正,反之为负。