以下为句子列表：
英文: Abstract: By the using of the theory of plastic mechanics, a calculated formula of ultimate strength of shearing stress is obtained for metallic materials with torsion of circular shaft,and the experimental results about low-carbon steel are given.
中文: 文摘:利用塑性力学基本理论,建立了具有塑性屈服及强化特性金属材料圆轴扭转的剪应力强度极限的计算公式,并给出了低碳钢剪应力强度极限的处理结果.
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英文: Experimental results indicate that (1) the bearing strengths of the specimens decrease with the increase in the load eccentricity ratio while they increase with the increase in the steel ratio, and (2) binding bars help to improve the ultimate strength an
中文: 结果表明，方形钢管混凝土短柱试件的承载力随着偏心率的增大而减小，随着钢管壁厚度（含钢率）的增大而增大，设置约束拉杆有助于该试件极限承载力和延性的提高。
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英文: The influence of retarder on the seaing time and ultimate strength of gypsum plaster was investigated in this paper.The experimental results indicate that the effect of single retarder,such as citric acid,is inferior to that of composite retarder which Wa
中文: 研究了分别以柠檬酸、柠檬酸与普通硅酸盐水泥复合物作缓凝剂,调节粉刷石膏的凝结时间,并对比2种缓凝体系对石膏抗折、抗压强度的影响.比较不同保水剂(聚乙烯醇、羧甲基纤维素)以及相同量的保水剂在不同工艺流程下保水效果上的区别.探索了有机保水剂和无机保水剂对粉刷石膏的保水性的影响.结果表明,柠檬酸与普通硅酸盐水泥的复合缓凝剂比单纯的柠檬酸更能有效地延缓建筑石膏的凝结,同时建筑石膏的抗折、抗压强度降低幅度减小.
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英文: The ultimate strength of CF/EP quasi-isotropic laminates with different stacking sequences is experimentally and numerically investigated to study the influence of stacking structure or loading direction on the strength.
中文: 摘要以碳纤维／环氧树脂层合板为对象，研究了其最终强度与层合结构的关系，对于准各向同性层合板，其弹性性能不随方向变化。
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英文: When 0o ply is included and lay on the surface in a laminate, the ultimate strength is the highest; if a laminate does not possess both 0oply and 90° ply, then it shows relatively large first-ply failure strength, but the ultimate strength is much smaller
中文: 拉伸试验和有限元数值分析表明：若板内含有0o层，且该层位于板的表层时，则最终强度最大；若板内既无0o层，又无90o层，则初始层破坏强度较大，而最终强度远小于含有0o层板的最终强度。
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