以下为句子列表：
英文: A critical review on present situation and developing trend of mechanical safety technology is made from the aspects of mechanical failure diagnosis, safety design of machinery, safety regulations and standards, safety accreditation of coal mines and the
中文: 摘要从机械故障诊断、机械安全设计、机械安全法规及标准、煤矿安全认证和人员培训等方面，简述机械安全技术的现状及发展趋势；指出目前我国矿山机械安全技术领域存在的主要问题。
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英文: Double characteristic analytic method of mechanical failure signals is an effective way to increase the degree of diagnosis accurancy, the key of the application of double characteristic analytic method is to pick up the micro shock pulses with the techno
中文: 摘要机械故障信号双特征分析法是提高诊断准确率的有效方法，双特征分析法的关键是应用共振解调技术提取微冲击信号。
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