查询词典 constant angular acceleration

215Zoned constant angular velocity?

分区恒角速度。。

By using this method, the angular frequency, amplitude, initial phase angle, decay constant of each component in transient voltage and/or current waveforms can be precisely extracted. Also, all other kinds of transient procedure can be analyzed by this method. Thirdly, a new definition of generalized instantaneous reactive power and generalized instantaneous reactive current in dq0 coordinates under any nonsinusoidal and unbalanced three-phase circuit is proposed for the first time. The detection and compensation method for different instantaneous reactive currents are also concerned.

本文首先提出了用于快速高精度频谱分析的一种改进快速傅立叶变换方法，该法具有速度快、精度高、抗混迭、不受采样定理约束、可以分析出谐次大于N／2的频谱系数等特点，可方便地应用于电力系统谐波分析及其它各类频谱分析；然后提出了基于非线性最小二乘优化法的电力系统暂态波形分析方法，可准确求出电力系统暂态电压、电流波形中各个分量的角频率、幅值、初相角及衰减常数，并可广泛应用于各类暂态过程波形分析。

With the angular velocity determined, I used Einstein's field equations and Kepler's laws to place an upper bound on the magnitude of the cosmological constant, which describes the curvature of space and the rate of the universe's expansion.In addition to learning science, I recently lectured physics classes on special relativity at the request of my physics teacher.

在校参加入党学习以来，我以一名党员的标准来严格要求自己，在思想上我积极要求进步，树立了良好的人生观和道德观；永远保持与时俱进，认真学习党的工作路线，正确贯彻党的方针政策，时刻关注着党和国家的发展形势，以及国内外的局势变化。

Based on the Hmiltonian expression for hydrogen atom in combination with the theory proposed, the theoretical value s of the hydrogen atom's energy, ground state energy and spectrum constant and the electron orbital angular momentum are given.

根据氢原子的量子哈密顿量表示，结合创新的量子算符代数理论，得到氢原子的能量、氢原子的基态能量、电子轨道角动量、氢原子的光谱常数等各种物理量的理论值。

1 Pan Pearl River Delta Physics Olympiad 2009 2009 年泛珠三角及中华名校物理竞赛 Q2 Spin Torque (16 points)题 2 自旋力矩(16 分) An electron has permanent angular momentum called spin that is fixed in amplitude h / 4π, where h is the Planck Constant, while its direction can be changed by external interactions.

电子具有固有的角动量 S ，叫做自旋，其方向可在与外界的相互作用下改变，其大小为固定的 h / 4π，其中 h 为普朗克常数。一导线载有电流 I，导线的下半部分由磁化了的导体组成，上半部分由非磁性导体组成。

Based on the principle of mass-changing mechanics,this paper analyzes the process of water wheel raising water,educes its movement differential equation s in its three stages from starting to stable running,obtains solutions of the equations,and calculates on the angular velocity of the waterwheel in constant motion.

应用变质量力学原理对农用水车在提水过程中所经历的三个不同阶段，即在运动过程中水车的受力和运动量都在发生变化的情况下，对其动力学问题进行了较为深入的分析，导出了水车由起动至稳定运转三个阶级的运动微分方程，并得到了它们的解答，进而求得水车在趋于定常运动时的转动角速度。

A car of mass m is slipping down a slope of inclination angle at a constant acceleration a.

一质量为m的小车从斜度为的斜坡以匀加速度a滑落下来。

The analytic solution of optimum low-thrust power transfer between arbitrary elliptical orbits using continuous constant acceleration is presented, based on the orbital elements selected.

研究航天器在小推力的作用下，椭圆轨道最优转移的一种解析解法。

This development is based on the most widely used constant average acceleration method.

这项发展是基於开发一个和广泛被采用的等平均加速度积分法具有相同特性的外显示积分法。

The explicit form of this method is very similar to that of the Newmark explicit method while its numerical characteristics are exactly the same as those the constant average acceleration method.

此新发展的外显式积分法其一般式和Newmark外显式积分法非常相似，然而，它的数值特性却完全与等平均加速度积分法一样。

Don not attempt to do something which you can not to do.

不要企图做那些办不到的事情。

The expression of CTGF and TNF-αweredetected by immunochemistry and the number of Clara Cells was calculated.

光镜下观察肺组织的病理变化，采用免疫组化染色观察肺组织中结缔组织生长因子和肿瘤坏死因子-α的表达和Clara细胞的数量。