| 1. | This situation is called destructive interference .
这种情形称作相消干涉。
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| 2. | The fundamental principles underlying the concept of electronic beam steering are derived from electromagnetic radiation theory employing constructive and destructive interference
电子波束控制的基本原理来自于电磁场理论的相干作用。
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| 3. | We design several combined photonic crystals models based on the destructive interference theory , which can transfer completely the energy of a signal from one channel to another , or can realize light switching
本论文首次利用干涉相消的原理，设计了满足一定条件的复合型光子晶体能量转移模型和光子晶体光开关。
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| 4. | So we can say destructive interference of atomic coherence leads to electromagnetically induced absorption , constructive coherence of atomic coherence leads to electromagnetically induced transparency
因此，我们可以确切地说，原子相干对吸收的相长干涉产生电磁诱导吸收，原子相干对吸收的相消干涉导致电磁诱导透明。
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| 5. | The one - half wavelength out of phase caused by the specimen itself enables this light to cause destructive interference with the direct light when both arrive at the intermediate image plane at the diaphragm of the eyepiece
这种由标本产生的半个波长的相位差的光线与直射光同时到达位于目镜光栏的中间像面时会产生相消的干涉。
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| 6. | In this paper we have done two work , one is we , in the dressed states representation , reveal that the constructive interference of atomic coherence on absorption leads to electromagnetically induced absorption , which is in sharp contrast to the case in which destructive interference of atomic coherence gives rise to electromagnetically induced transparency and the other is we reveal that coupling field linewidth inhibits electromagnetically induced absorption , by employing a four - level system in which three transitions are in n configuration and the middle transition serves as a probe transition
本文主要做了两方面的工作：一是在修饰态表象中揭示修饰态原子相干对吸收的相长干涉产生电磁诱导吸收，这与修饰态原子相干对吸收的相消干涉导致电磁诱导透明的情形形成鲜明的对照。二是在裸态中，引入耦合场的线宽，从而发现耦合场的线宽抑制电磁诱导吸收。首先研究电磁诱导吸收。
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| 7. | When a collimated - well gaussian laser beam passes through a 27i - phase plate and then focused by a lens , a focused hollow beam ( fhb ) will be generated behind the lens , as a result of the completely ( r = 0 ) and partially ( r 0 ) destructive interference effects around the central region of the beam
当一束准直的高斯光束通过具有2位相分布的位相片和一个薄透镜时，这将导致在入射高斯光束中心的完全和部分相消干涉效应，于是在透镜后就会形成一束聚焦中空光束( fhb ) 。
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