小浪底大坝是枢纽安全监测的重要部位，埋设了大量内部观测仪器，布设了8条视准线。
The dam is important for the safety monitoring of Xiaolangdi Multipurpose dam Project because a lot of instruments and 8 collimating lines have been built inside the dam.
小浪底大坝是枢纽安全监测的重要部位，埋设了大量内部观测仪器，布设了8条视准线。
The dam is important for the safety monitoring of Xiaolangdi Multipurpose dam Project because a lot of instruments and 8 collimating lines have been built inside the dam.
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