简要介绍了陀螺经纬仪在定向测量中的应用和祁东风井联系测量技术。
This text introduces the application of theodolite in the directional measure technique in Qidong ventilation shaft.
该基地是唯一一个具有全套东风- 5系列发射井可以用于试验发射的测试基地，并且曾经在公开出版的刊物上因为东风- 31和东风- 31a的发射试验得到过表彰。
It is the only test facility to be outfitted with a DF-5 series silo for trials launches, and has been cited in the open press as the launch site for DF-31 and DF-31A trials.
东风31不同于中国旧式的基于发射井的战略导弹，旧式的相对很容易在发射前就被摧毁，而东风31能够隐藏于卡车后面。
Unlike China's older silo-based strategic missiles, which would have been relatively easy to destroy before launch, the DF-31 can be concealed on the back of a lorry.
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