momentum theory

基本解释

In this paper, we discussed the transition selection rule of electrical dipole radiation in atom physics by the parity theory and angular momentum theory in quantum.
本文利用量子力学的宇称理论和角动量理论，对原子物理学中所熟知的电偶极辐射的跃迁选择定则进行了理论探讨。
To incorporate the important effects of the rotor wake, the far-field boundary condition derived from the rotor momentum theory and the cyclic boundary condition have been used.
为了充分考虑旋翼尾迹对流场的影响，采用周期性边界条件和由动量理论导出的远场边界条件。
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From fluid flow momentum theory the basic equation of flow dynamic forces in the spool closing process is derived, and the spool dynamic equation of the two—way cartridge valve is established.
本文根据流体动量理论导出了阀芯关闭过程中液动力的关系式，在此基础上建立了二通插装阀阀芯关闭运动方程。

Richard Moroney, editor of the Dow Theory Forecasts , believes that this momentum will continue due to strengthened financials.
FORBES: Steady Economic Growth Means Big Gains For This Coal Producer
Yet just when governments need the scope to add fiscal momentum to their economies, the pact's rules forbid them—in theory at least.
ECONOMIST: Not so rosy The

动量理论
Based on the momentum theory and blade element theory, a numerical modeling is made to analyze the micro aero vehicle’s airscrew’s thrust characteristics. The modeling applicability is validated through tests.
从动量理论和叶素理论出发,建立了分析微型飞行器螺旋桨拉力特性的数值模型,并通过实验验证了模型的适用性。
体育
动量理论