Field erection work will begin in October this year and complete on June first next year.

现场安装工作将于今年十月开始至明年六月一日完工。

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Dynamical characteristics of the gyroscope during spin-up and erection procedure, and the influence of the stray magnetic field on gyro's drift and speed attenuation are investigated.

讨论了陀螺在驱动、定向过程中的动力学特性，以及杂散磁场对陀螺漂移和转速衰减的影响。

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According to field mapping experience of the author, the features of plummet are summarized, and the inspection methods and horse erection skills of the optical plummet are mainly introduced.

根据多年从事测绘外业实践经验，总结测量仪器对点器的特点，重点介绍光学对点器的检验方法及其脚架架设技巧。

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