用光学测微法进行一等跨河水准测量

Optical Micrometer with First Class River Leveling Method

用光学测微法进行一等跨河水准测量时,通过合理的场地布设,在有利于减小各种误差的条件下观测,取得优良的观测成果。

Optical micro-crossing first-class standard of measurement method,through a reasonable venue layout,in favor of reducing all kinds of error conditions,observation,made an excellent observation results.