| 1. | Its own elliptic motion around it will be almost imperceptible .
它绕着质心的椭园运动就几乎看不出来。 |
| 2. | The velocity of the center of mass is constant in the absence of external forces .
在无外力时，质心的速度是常量。 |
| 3. | The origin is located on the axis at the point closest to the center of mass .
原点坐落在转轴上最靠近物体质心的一点。 |
| 4. | To remove the ambiguity, these laws should refer to the velocity and the acceleration of the center of mass .
要避免含糊，这些定律所指的应当是质心的速度和加速度。 |
| 5. | To avoid ambiguity, newton's first and second laws for systems should be restated in terms of the center of mass .
为了避免意义含糊，牛顿第一定律和第二定律用于系统时，应根据质心的观点加以重述。 |
| 6. | Thus the path of the vehicle mass center must be a circle around the axis, i. e. it must be a minor circle of the earth, lying on a parallel of latitude .
所以飞行器质心的轨迹必须是围绕轴线的一个圆，即它必须是一个平行于纬度线的地球的小圆。 |
| 7. | We use the cell model in liquid statistical physics to deal with the space distribution of the molecule center - of - mass
这里关于分子质心的空间分布采用了液体统计物理中的格胞模型。 |
| 8. | Finally , the rule of geocenter motion is studied . and its effects on the height datum are also discussed in the dissertation
论文最后研究了地球质心的运动变化规律及其对高程基准的影响的有关问题。 |
| 9. | The response curve of rear left hydraulic mount , rear right hydraulic mount , and the fore rubber mount in each conditions are draught . the curve of hydraulic mount system ' s transmissibility is also calculated in the end and the performance of vibration isolation is analyzed . 5
绘制了在时域和频域上的动力总成的加速度运动响应，质心的角加速度运动响应以及后左，后右液压悬置，前橡胶悬置的动反力曲线，以及怠速，高速工况下各悬置的加速度功率谱密度曲线。 |
| 10. | By using transfer matrix method and corresponding boundary conditions , the steady - state responses of the counter - rotating dual - rotor system were analyzed , and the changing characteristics of the disks ' orbits and the centroids ' locations were studied experimentally , proving the relevant conclusions from calculations
针对这种结构，应用传递矩阵法，结合边界条件，分析了反向旋转双转子结构稳态不平衡响应的变化规律，研究了内、外转子盘轴心轨迹和质心的变化特点，并进行了相应的试验研究，验证了计算仿真的相关结论。 |
