momentum theory

常见例句

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.
本文利用量子力學的宇稱理論和角動量理論，對原子物理學中所熟知的電偶極輻射的躍遷選擇定則進行了理論探討。
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.
爲了充分考慮鏇翼尾跡對流場的影響，採用周期性邊界條件和由動量理論導出的遠場邊界條件。
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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.
本文根據流躰動量理論導出了閥芯關閉過程中液動力的關系式，在此基礎上建立了二通插裝閥閥芯關閉運動方程。

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