以下为句子列表：
英文: A brief description of the operating principle, features and application of automatic hydraulic tensioning devise for belt conveyors is given, which is a guide to using them correctly in coal mine.
中文: 摘要简要介绍自动液压张紧装置的工作原理、特点和适用场合，对煤矿正确使用自动液压张紧装置具有指导意义。
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英文: In order to optimize the perpetuation tensioning tonnage of prestressed pier anchor wire of Goupitan arch dam, first the scheme contrast method is adopted to define the perpetuation tensioning tonnage combination of the primary and secondary anchor wire,
中文: 摘要为优化构皮滩拱坝中孔预应力闸墩锚索永存张拉吨位，首先采用方案优选的方法确定主次锚索永存张拉吨位组合，但优选结果拉锚系数偏大，再对闸墩体型进行优化，然后采用基于参数化有限元的ANSYS优化设计模块对主次锚索永存张拉吨位进行优化，优化结果满足应力控制要求，降低了拉锚系数。
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英文: In view of the phenomenon that the tensioning elongation of sharp curvature radius tendons is slightly greater than the theoretic elongation, this paper analyzes the squeeze effect and strand effect that affect the tensioning elongation of the tendons, an
中文: 摘要针对小曲率半径预应力束张拉延伸量比理论延伸量偏大这一现象，分析了影响小曲率半径预应力束张拉延伸量的挤压效应和束效应，提出了小曲率半径预应力束张拉延伸量的统一计算方法。
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英文: The article analyses negative effects of pretensioning for underground structure on waterproof coated membrane and introduces the way of treatment and quality control measures taken.
中文: 分析了地下工程结构预应力张拉对涂膜防水层的负面影响，介绍了采取的有针对性的处理方法以及保证防水施工质量的控制措施。
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英文: This product is mainly used for prestressed and post-tensioning technology in large, medium and small sizes of various of PC structures,and widely used for civil engineering construction of large scale railroad,high-way bridges,buildings,truesses,overhead
中文: 主要用于制作先、后张法的大、中、小型各种结构形状的预应力混凝土构件，如铁路、公路、屋架、吊车梁、工业民用预制板、墙板、管桩、电杆和预应力混凝土水管、电视塔、核电站等工程建设上。
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