介绍了用一种简易激光指向器改装经纬仪，使普通经纬仪带有激光指向器。
An improved theodolite fixed with a simple laser direction indicator was introduced.
根据桶形基础的特殊形式，采用普通经纬仪对桶基安装误差进行测量是比较困难的。
Because of the special bucket foundation con structure, it is difficult to measure the bucket foundation installation error by using transit.
根据桶形基础的特殊形式，采用普通经纬仪对桶基安装误差进行测量是比较困难的。
Because of the special bucket foundation con structure, it is difficult to measure the bucket foundation installation error by using transit.
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