以下为句子列表：
英文: A water wheel, turned by water flowing over a weir, furnishes a good example of potential energy being turned into useful mechanical energy.
中文: 由流水过坝转动的水轮提供一个说明位能正在转变成有用的机械能的例子。
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英文: Abstract: Through appropriately changing the water-inrush condition based on mechanical analysis, the potential energy function of water-inrush from coal floor could be derived, which conforms to the catastrophic model.
中文: 文摘:对建立在力学分析基础上的突水条件进行适当变换，得到煤层底板突水势函数，它符合尖点突变模型。
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英文: According to Bernoulli theorem,kinetic energy and potential energy change due to the thermokinetic differences of steam and conden sation water,and action valve plate starts and stops to choke air and drain water.
中文: 圆盘式疏水阀是根据伯努力热动力原理，利用蒸汽和凝结水通过阀孔时流速和何种产生变化的不同热力学性质，驱动阀片开关阀门，从而达到阻汽排水。
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英文: Based on the generalized potential variational principle of nonlinear elasticity theory with large deflection, the incomplete generalized potential energy functional with large deflection is established on the space coupling free vibration of collaborated
中文: 摘要基于大位移非线性弹性理论的广义变分原理，考虑加劲梁轴向压缩应变能和剪切应变能的影响，建立了协作体系斜拉桥空间耦合自由振动的大位移不完全广义势能泛函，通过约束变分导出了协作体系斜拉桥的加劲主梁竖向挠曲振动微分方程。
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英文: “Three-stone fires are about the worst you can do for cooking efficiency,” he said. The fires convert less than 8 percent of the wood's potential energy into heat for the stove.
中文: “三石生火法对做饭来说效率是最差的，”他说。这种生火方法转化的能量还不到柴火可能有的转化为炉子里热能的能量的8%。
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