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: Oil. It pours very slowly compared with water. It takes a greater force to stir the oil, indicating a higher shearing stress for a given velocity gradient.
中文: 4如果需要较高的动力黏度时，是选择冷的润滑油或新鲜的水，为什麽?
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英文: Study on relationship of viscosity and shearing stress of liquid in plant branch;
中文: 植物枝茎内液体的黏度与剪切应力关系的研究
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