以下为句子列表：
英文: A statistical analysis is given, including chronological distribution, degree types, country, universities, lingual distribution and so on.
中文: 分别按论文的年份、学位类型、授予学位的国家、大学、论文语种等方面定量分析了其概况。
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英文: Abstract: This paper has expounded and proved the necessity and importanceof the investigation into element abundances and composition of the crustal surficial materials and, based on strict statistical analysis and calculation of the high-precision data
中文: 文摘:论证了中国丰度及地壳表层物质成分研究的必要性和重要性，利用区域地球化学勘查所提供的高精度分析数据，经严格统计计算，发表新疆地区及其一级构造单元表层岩石、岩屑、水系沉积物的39种元素背景平均值。
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英文: Abstract: Through statistical analysis of the rock mechanic properties of upper Jurassic and Cretaceous red mudstones, siltstones and sandstones in the middle Sichuan Red Basin, the range of their compressive strength, the features of the shearing strengt
中文: 文摘:对川中白垩系、侏罗系的泥岩、砂岩、泥质粉砂岩的抗压强度进行统计分析，得出红层岩石作为地基时抗压强度的范围值供设计参考，对泥岩、砂岩的其他力学性质进行了评价。
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英文: According to the practice of control chart analysis (CCA) in the management of coal mine safety, it is showed that the application of control chart analysis in the statistical analysis of risk indexes can scientifically judge the developing trend of risk
中文: 摘要根据实践，介绍控制图分析法在煤矿安全管理中的应用，将控制图法应用于安全风险指标的统计分析可以对风险指标的发展趋势作出科学判断，评价系统安全状态是否有明显好转或恶化，检验安全管理及技术措施是否有效。
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英文: A statistical analysis to the failures of the distribution switchgear during 990～999 is made. The features of the SF and vacuum circuit breaker are analyzed. It then introduces some trends of the application of non oil high voltage switchgear.
中文: 本文介绍了中国电力系统配电电压等级开关设备的现状 ,统计分析了配电开关设备 990～ 999年的事故情况以及SF、真空开关设备的故障特点 ,指出了高压开关设备无油化的若干趋势。
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