The coupled equation of two-wave mixing and expressions for weak beam amplification in a single mode waveguide are deduced by application of coupled wave theory.

本文利用耦合波理论分析推导了单模平面光波导中两波混合的耦合波方程和弱相干光放大率的表示式。

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Some of us have been used to more creative ways of greeting one another, such as a friendly wave from two meters away.

我们中的一些人已经习惯了更有创意的问候方式，比如在两米开外友好地挥手。

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Its Radmax engine uses two wave-shaped cams that rotate above and below a stationary rotor.

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First and foremost is the 180-degree swiveling LCD, which, like Samsung's MultiView flavor, flips all the way forward to simplify composition for self-portraits, but it also offers some nifty gesture controls, letting you wave briefly to trigger a two-second countdown, for example.

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Waves 2 and 4 are the two minor corrections in the five-wave move higher.

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