勘测设计阶段测量 [测] survey in reconnaissance and design stage
- 指出了该工程勘测设计阶段高程控制测量存在的问题;
In this paper, the principle on which the first-order precise leveling is based. - 针对勘测设计阶段测量精度要求较低,而无碴轨道施工测量精度要求很高的情况。
According to the low required measure precision of reconnaissance design phase, and the required measure precision of reconnaissance design is very high.