以下为句子列表：
英文: Corrosion prevention of pretensioned structures is primarily accomplished through the use of high-performance concretes or the addition of corrosion-inhibiting admixtures.
中文: 要求结构防腐蚀主要依靠高性能混凝土和加钢筋阻锈剂来实现。
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英文: The new concepts, such as the active supporting coefficient, the coefficient of strength utilization, the coefficient of pretensioned bolt length, the effective compressive zone, the coefficient of pretensioned stress diffusion, the framework and mesh str
中文: 提出锚杆主动支护系数、强度利用系数、预应力长度系数、有效压应力区、预应力扩散系数、有效压应力区骨架网状结构及临界支护刚度等概念。
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英文: The underground tests show that the deformation and roof delamination of roadway surrounding rock can be effectively reduced by means of great increase of the bolt pretensioned stress, the steel strip plays an important role in the rock bolting system, an
中文: 井下试验表明，大幅度提高锚杆预应力可显著减小巷道围岩变形，有效控制顶板离层；钢带在预应力支护系统中起非常重要的作用；锚杆预应力存在临界值，达到或超过临界值后锚杆支护可有效控制围岩变形与破坏。
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