P90-17FE=A 点号距离实测高差+改正数+改正后高差改正后高科辅 助 (km) (m) 计 16.137 fr B.2.4+0.4564-7 0.4494 Chg(HBM. Em 14.4+1.2584-124+1.246416.586 =38m2 17.832 2 2.14 4.5694 4.5754 13.257 ±20工mm 4.7 4.123 13 4.1364 =±74 9.121 BM 13.64-6.978 38 7.016 fr <fuP90-17 i h i L L f v  = −  = − h v f