準周期振蕩 的英文怎麼說

中文拼音 [zhǔnzhōuqīzhèndàng]
準周期振蕩 英文
qpo
  • 準 : Ⅰ名詞1 （標準） standard; guideline; criterion; norm 2 （目標） aim; target Ⅱ動詞1 （依據; 依照）...
  • 周 : Ⅰ名詞1 （圈子; 周圍） circumference; periphery; circuit 2 （星期） week 3 [電學] （周波的簡稱） c...
  • 期 : 期名詞[書面語]1. （一周年） a full year; anniversary 2. （一整月） a full month
  • 振 : 動詞1. （搖動; 揮動） shake; flap; wield 2. （奮起） brace up; rise with force and spirit
  • 蕩 : Ⅰ動詞1 （搖動; 擺動） swing; sway; wave 2 （無事走來走去; 閑逛） loaf; wander; roam; loiter; go a...
  1. Because the speech signal is periodicity at sonant which vocal cords surge in low frequency and similarity to white noises at surd, the pitch can be detected in traditional way through the correlation operation without the speech produce model

    在人類語音的濁音段，聲帶發生較低頻率的振蕩，語音信號呈明顯的準周期性，而在清音段，語音信號則類似於白噪聲。
  2. Abstract : we have studied the spontaneous emission from a three - level atom with an external - driving field in a photonic crystal. as a result of quantum interference and photon localization, the population in the two upper levels displays quasi - oscillatory oroscillatory behavior. this depends on the initial atomic state and the relative positions of the two upper levels from the forbidden gap. the intensity and the phase of the external field can affect spontaneous emission from the atom. the properties are different from a three - level atom either in vacuum or in aphotonic crystal without an external driving field

    文摘:討論了在雙光子驅動場作用下，三能級原子在光子晶體中的自發發射問題.由於量子干涉和光的局域化作用，兩個上能級中的占據數將具有周期振蕩或準周期振蕩的性質，這不僅依賴于兩個上能級與禁帶的相對位置，同時也依賴于原子的初始狀態，而且還與驅動場的強度、驅動場的入射位相有關.這些性質既與真空中帶有驅動場的原子的自發發射性質不同，也有別于無驅動場作用下光子晶體中三能級原子的自發發射性質
  3. Pseudo - 120d variations in length - of - day from 1950 - 2003 with el nino

    2003年日長近120天準周期振蕩和厄爾尼諾現象
  4. And then the theoretic technique of import the periodically wave of periodically poled crystals in the process of opo was studied, the theoretical method was realized by using period poled crystal in quasi - phase - matched optical parametric oscillation

    研究了將周期極化晶體的周期波矢引入光學參量振蕩過程，利用周期極化晶體實現準相位匹配光學參量振蕩的理論方法。
  5. Taking account of the change in temperature and precipitation, it can be found that west china is becoming wanner and wetter, especially in northwest china, while northeast china and north china warmer and drier

    具有準10年振蕩周期，清楚的反映了90年代的南澇北旱形式。高原和西北西部地區的增濕明顯，而東北、華北和西北東都在減濕。
  6. 29 representative stations of northwest china are selected using eof analysis, and the detailed results of characteristics are given for temporal and space variation of interarmual change and decadal change. the main conclusions are followed : ( 1 ) the tendency of precipitation in northwest china is positive to the west of 103 e longitude and opposite to the east of it. there is a periodic oscillation of quasi - three years of precipitation and a mutation in the middle of 80s in spring precipitation of northwest china

    用eof分析方法選取西北地區29個代表站，分別對其春季和夏季近50a降水進行年際變化和年代際變化時空特徵分析，結果發現（ 1 ）西北地區近50a降水時空趨勢變化以103 e為基準線，以西為正，以東為負，並有準3a的振蕩周期， 80年代中期西北地區春季降水出現了氣候突變。
  7. The results showed that the whole distribution pattern of winter chilling damage in guangdong had quasi - 8 year periodic variation, and the south - north distribution pattern had quasi - 22 year periodic variation. generally speaking, the periodic variation of winter chilling damage in guangdong had quasi - 8 year mainly oscillation

    結果發現，廣東冬季寒害的整體分佈型具有準8年的周期變化；南北分佈型具有準22年的周期變化；綜合而言，廣東冬季寒害具有準8年主要振蕩的周期變化。
  8. Northeast china floods season precipitation take place a mutation in 1967. the distribution of northeast china floods season precipitation anomalies shows different phase in different years. ( 3 ) northeast china precipitation anomalies shows complex periodic variation in different seasons and in different years, but all the season exist periodic variation of quasi - three years and over 10 years to different extent

    汛期降水異常的空間分佈在不同年代有不同的位相分佈特徵（ 3 ）東北地區降水不同季節不同年代表現出了較為復雜的周期特徵，其中各季都表現出了明顯的準3年振蕩的周期特徵，同時還不同程度存在10年以上的周期。
  9. A more reasonable sao index is therefore defined as the sao variance percentage of the difference of the zonally averaged slp between 40 s and 65 s

    據此，提出用40 s和65 s緯圈平均海平面氣壓差的半年周期分量的方差貢獻作為準半年振蕩的強度，該定義較前人的定義更為合理。
  10. Tthe quasi - biennial oscillation, an oscillating phenomenon in which the wind in the upper atmosphere over the tropics changes its direction from east to west and then back to east about every two years

    準兩年振蕩發生在赤道附近的高空，分為西風異常和東風異常兩個交替出現的位相，周期約為兩年。
  11. ( 4 ) latitude and meridional wind stress fields both have the character of quasi - quadrennial and quasi - biennial oscillation, but their phases are different. so their conjunct effect makes enso oscillation have both quasi - quadrennial and quasi - biennial periodicity and erratic, which causes the forecast of enso events uncertainty

    （ 4 ）緯向和經向風應力距平場具有準4a和準2a的振蕩性質，但是位相存在差異，因此共同作用下造成enso振蕩既有準4a和準2a的周期性，又有不規則性，對于enso事件的預報帶來不確定性。
分享友人
分享到 Line

分享到臉書