zero order wave 中文意思是什麼

zero order wave 解釋
零級波
  • zero : n （pl zeros zeroes）1 【數學】零；零號。2 零位；零點，起點；（溫度表的）零度，冰點；座標原點；無...
  • order : n 1 次序，順序；整齊；（社會）秩序，治安；狀況，常態；健康狀態；條理；會場秩序；議事程序，日程；...
  • wave : n 〈美海軍〉女志願軍人〈見 WAVES 條〉。n 1 波浪；碎浪； 〈the wave（s）〉 〈詩〉海。2 波動；波狀...
  1. Variable frequency speed regulation system based on the voltage space - vector is researched in this paper, the principle of the voltage space - vector is presented, and the third part " s software strategy of voltage space - vector is analyzed, the method of the third part " s software of voltage space - vector is imitated with simulink. at the same time, the duty time and duty order of the two zero - vector are analyzed and showed that the voltage space - vector pwm is actually a modulated method by adding the harmonic to the sine wave

    本文對基於空間電壓矢量的變頻調速系統進行了研究，敘述了空間電壓矢量的原理，對ti公司第三方軟體的對稱空間電壓矢量的演算法進行了分析，並用simulink對該方法進行了模擬，對兩個零矢量的作用時間和作用順序進行了分析，指出空間電壓矢量pwm實質上是一種諧波注入的調制方法。
  2. In this paper, we prove that for a three - level atom in a circularly polarized electromagnetic wave, there is a coherent superposed state of its two states such that when the atom is initially in the state, under the zero - order approximation, the atom is always in the state hereafter, while the occupation probabilities that the atom is in other states are zero ; under the first - order approximation, the atom is nearly in the state, while the occupation probabilities that the atom is in other states near zero

    本文證明：對圓極化光中的三能級原子，存在著由它其中的兩個態構造的一個特殊的相干疊加態，當原子最初處于這個態時，它以後將總是幾乎處于這個態，而原子處于其他態的概率接近於零。
  3. Based on the rigorous coupled wave theory, the phenomenon that the zero order reflection efficiency of rectangular subwavelength grating varies with the wavelength is studied when incidence angle, azimuth and grating parameters are variant

    摘要從嚴格耦合波衍射理論出發，在不同入射角、方位角和光柵參數下的情況，計算了矩形亞波長光柵零級反射效率隨入射光波長的變化。
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