介绍汽轮机异常振动的特征表现、原因分析及预防措施。
The paper introduces the characterization, reason analysis, and precautionary measure of one turbine's abnormal vibration.
分析了混凝土结构外观缺陷产生的原因，提出了相应的施工预防措施及处理方法。
The paper analyses the reason why the appearance defect of concrete structure appears, and puts forward the corresponding precaution and treatment in construction.
本文就大学生犯罪的社会原因及个体原因进行粗浅分析，并提出针对性的预防措施。
In this paper, its social and individual causes are analyzed and the precautions against it are proposed.
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