以下为句子列表：
英文: After the ball leaves, the racquet mass center (balance point) moves at a slower speed, and this means a loss of its kinetic energy (kinetic energy = 1/2 mass times velocity squared).
中文: 球离开之后，球拍开始减速，球拍减速的过程就是能量释放的过程，释放能量的值等于?（球拍）质量乘以速度的平方。
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英文: Based on the conservation principle of linear and angular momentum, the method derives the equations of the mass and mass center as well as inertia tensor of the new end-effector for the manipulator handling the unknown object.
中文: 该方法基于线动量和角动量守恒定律，推出了机械臂负载未知目标的新的末端效应器的质量、质心和转动惯量的方程组。
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英文: In effect, these two celestial bodies revolve around each other (their mass center lies outside of Pluto) as if joined with a rod connecting two opposite points on their surfaces.
中文: 好像结合连接在他们的表面方面的二相对事物点的一支竿了，有效，这些二个天体在彼此(他们的大众中心谎言在冥王星的外面)的周围考虑。
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英文: The calculated mass centerof the mantle's layers implies that the mass center of the Earth is to the northern hemisphere.
中文: 计算地幔各层的质心位置发现，地球的质心偏于北半球。
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英文: The disadvantageous effect should be considered when the deflection between the structural mass center and stiffness center exists.
中文: 摘要结构刚度中心与质量中心偏差较大时，应考虑扭转的不利影响，将高层建筑结构等效为悬臂杆，从顶至底依次选取脱离体。
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