bilateral observation

网络释义

1.	对向观测 36测... ... "双转点水准测量"," bilateral leveling" "对向观测"," bilateral observation" "毕尔贝钢标"," Bilby steel tower" ... www.guandang.com
2.	交会观测系统 observation... ... azimuth observation 方位角测定 bilateral observation 【军】交会观测系统 cumulative observations 累积观测 ... www.chinabaike.com

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