symmetric center 中文意思是什麼
symmetric center
解釋
對稱中心-
At the same time, differen t arrays of electrodes have been studied. flow visualization has shown that the plasma between symmetric streamwise electrode strips ca n ' t induce flow velocity at the same phrase driving but can at multi - phrase driving, and asymmetric streamwise eledtrode strips can induce flow velocity both at the same phrase and at multi - phrase driving in still air. in principle, the experimental results correspond to that of the cooperant research between university of tennessee and nasa langley research center
流動顯示實驗表明，在一個大氣壓下，對于電極對稱分佈的情況，在同相位的射頻激勵下，靜止的空氣中沒有明顯的現象，而在多相位射頻激勵下，靜止空氣中的二維平板上可以產生推力，誘導了流場；對于電極的非對稱分佈的情況，在同相位或多相位的射頻激勵下，都能在二維平板上產生推力，並誘導流場。 -
In contrast, the out - of - phase vacillation in summertime ao covers the arctic region and mid - latitude asian continent. though the summertime ao exists on intraseasonal as well as interannual time scale, its asian active center abates on the intraseasonal pattern, thus awarding it more conspicuous zonal symmetric structure. interannually, summertime ao exhibits the zonal asymmetric and baroclinic features, and its seesaw mode is significant only in the lower troposphere
在年際時間尺度上，夏季北極濤動表現出比冬季北極濤動更強的緯向非對稱性和對流層高、低層位相不一致的斜壓性，其極地中心和亞洲中心的反位相濤動關系在對流層低層比較顯著，向上逐漸減弱，到對流層高層不能表現明顯的亞洲中心。
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