They store the energy mechanically by rotating mass around an axis.
它们通过质量绕轴旋转机械存储能量。
An earthquake can make earth rotate faster by nudging some of its mass closer to the planet's axis, just as ice skaters can speed up their spins by pulling in their arms.
一次地震可以使地球旋转得更快，通过将地球的质量向它的轴线轻推，正如滑冰的人可以通过缩回他们的手臂来使旋转加速。
Since that pulls mass closer to the planet's spin axis, it causes the planet to rotate faster - just as an ice skater spins faster when she pulls her arms towards her body.
由于质量朝地球旋转轴靠拢，这就导致地球旋转速度加快- - -就像一个速度滑冰选手，当她把胳膊向身体收拢时就会旋转得更快。
If we have a solid cylinder, then the moment of inertia about this axis Q through the center of mass, which I've called Q, equals 1/2 MR squared.
假如有一个实心圆柱体，轴心的时间惯量,通过这个物质的中心，等于1/2，MR的平方。
The earthquake also shifted the so-called figure axis of the earth, which is the axis that the earth's mass is balanced around.
地震也改变了地球的几何中轴线，中轴的周围地球的重量是平衡的。
The figure axis is the axis around which the Earth's mass is balanced and the north-south axis by about 33 feet (10 meters).
地轴是地球质量平衡的轴线，偏离南北轴线约33英尺（10米）。
I am using fancy words today. And the moment of inertia — the difference with a mass is that the moment of inertia is defined about some axis.You choose an axis.
我今天措辞别致，转动惯量就是——，与质量不同，转动惯量的定义跟旋转轴有关，选定一个旋转轴。
When a rotor rotates around its axis, the centrifugal force is produced due to the uneven distribution of mass relative to the axis.
任何转子在围绕其轴线旋转时，由于相对于轴线的质量分布不均匀而产生离心力。
When the rotor is rotating around its axis, the centrifugal force is produced because of the uneven mass distribution with respect to the axis.
何转子在围绕其轴线旋转时，由于相对于轴线的质量分布不均匀而产生离心力。
Cross beam and Axis Z are made of surface-anodized aerometal to improve thermal stability and reduce moving mass for faster setting.
Z轴采用表面阳极化航空铝合金，温度一致性极佳；并降低了运动部件的质量，减少测量机在高速运行时的惯性。
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。
The authors reported nursing cooperation in traumatic lower cervical spine instability treated by AXIS plating fixation technique of lateral cervical mass.
笔者总结AXIS颈椎侧块钢板治疗外伤性下颈椎不稳的手术配合。
Result the parameters of posterior arch, lateral mass, vertebral artery groove, axis length of screw pass via posterior arch and lateral mass, projection and direction of screw were measured.
结果测量出寰椎后弓、侧块、椎动脉沟、后弓侧块螺钉通道的轴线长度，及后弓进钉点和进钉方向等参数。
This article gives the calculation of the change of rotation of the earth and the shift of rotational axis due to the annual change of the mass.
本文提供了由质量周年变化而引起的地球自转及自转轴移动变化的计算。
This makes the Chile fault more effective in moving Earth's mass vertically and hence more effective in shifting Earth's figure axis.
这使得智利断层移动地球更多的群众垂直，因此更多的转移地球数字轴有效有效。
Influences of axis inclination, length, clamping Angle of anchorage, roughness and bonding degree of interface on the displacement of anchorage and repose stability of rock mass were explored.
就锚碇体轴线倾角、长度、夹持角、接触界面粗糙度及结合程度对锚碇位移和岩体安息稳定性的影响作了深入探讨。
Object To evaluate the clinical outcome of fixation of C2 vertebral pedicle and C3 lateral mass of screw in treatment of traumatic spondylolisthesis of the axis and the selection of therapy.
目的评价颈椎后路椎弓根及侧块螺钉内固定治疗创伤性枢椎滑脱的临床疗效及手术方案的选择。
Object To evaluate the clinical outcome of fixation of C2 vertebral pedicle and C3 lateral mass of screw in treatment of traumatic spondylolisthesis of the axis and the selection of therapy.
目的评价颈椎后路椎弓根及侧块螺钉内固定治疗创伤性枢椎滑脱的临床疗效及手术方案的选择。
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