激波密度比 的英文怎麼說

中文拼音 [jībōmìdùbǐ]
激波密度比 英文
shock density ratio
  • 激 : Ⅰ動詞1 （水因受到阻礙或震蕩而向上涌） swash; surge; dash 2 （冷水突然刺激身體使得病） fall ill fr...
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  • 密 : Ⅰ名詞1 （秘密） secret 2 [紡織] （密度） density 3 （姓氏） a surname Ⅱ形容詞1 （距離近; 空隙小）...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 比 : Ⅰ動詞1 （比較; 較量高下、 長短、距離、好壞等） compare; compete; contrast; match; emulate 2 （比...
  1. In this paper, high - order accurate weighted essentially non - oscillatory ( weno ) schemes are investigated and their applications in hyperbolic conservation laws are discussed. based on this, a new weno difference scheme which based on dispersion - relation - preserving relation is developed, and representative test cases with this scheme for computational aeroacoustics ( caa ) problems has been implemented and compared in order to test capability of wave capturing ; in addition, weno schemes generally do not converge at high order in the presence of contact discontinuity of euler equations, so a conservative front tracking technique coupling weno schemes and level set method to simulate the translating density profile is presented here, and numerical simulation with this technique for representative test case has been implemented and results show the desired accuracy

    本文研究了高階精度加權基本無振蕩（ weno ）格式及其在雙曲守恆律方程中的應用，在此基礎上作了兩個方面的工作：一是針對高頻聲波問題構造出一種基於保色散關系（ drp ）的weno有限差分格式，並對計算氣動聲學（ caa ）問題的代表性算例進行了大量數值實驗，比較了該格式捕捉波數的能力；另外，針對高階weno格式在處理euler方程的接觸間斷時精度有所降低的問題，研究了利用界面追蹤技術levelset方法和高階激波捕捉weno格式相結合的一種守恆追蹤方法，並且給出有代表性的密度滑移面問題的算例，得到一致高階精度的數值模擬結果。
  2. But when concerned with higher magneto - optical recording density, the kerr angle become smaller at shorter wavelength than at longer wavelength result from recoding and reading the memory information by shorter wavelength semiconductor laser tube. further more the signal - to - noise of recording information lowers and brings difficulty for the reading

    但在更高密度磁光記錄方面，由於信息記錄與讀出採用短波長半導體激光管，磁光記錄材料的克爾旋轉角比長波長時小，導致記錄信息的信噪比下降，給信息讀出帶來困難，為此將對材料進行改性。
  3. The intracavity photon density and initial population inversion density are assumed to be gaussian distributions instead of plan wave assumption, based on this assumption, the rate equations of diode - pumped intracavity - frequency - doubled passively q - switched laser are modified. through solving these space - dependent rate equations numerically, the results under different assumption are compared. 5

    將腔內光子密度和初始反轉粒子數的平面波近似修正為高斯分佈近似，獨立地導出描述二極體泵浦內腔倍頻-被動調q激光器的速率方程，並通過數值求解該方程比較了兩種近似下脈沖特性的不同； 5 .實驗驗證了2中提出的實驗方案，並對實驗結果進行了分析。
  4. The detectors " major response to the irradiation of in - band light is optical effect, while thermal effect can be seen when the incident laser power density is somewhat higher ; when irradiated by off - band light, the detectors " major response is thermal effect

    實驗發現，探測器對波段內激光的響應主要表現為光效應，當輻照激光的功率密度比較大的時候，還會有熱效應出現；而探測器對波段外激光的響應特性則主要表現為熱效應。
  5. We have designed a set of ultraviolet probe and holographic interferometer system on " xg - ? " laser facility, where probe wavelength can be short as 0. 308nm. igoring effect of magnetic field, electron density can be measuremented exactly. in this paper, holographic interferometry is interpreted in detail and and the experimental results are presented and analysed

    我們在「星光」裝置上設計了一套紫外超短脈沖激光探針及其全息干涉系統，該系統探針光波長可以短到0 . 308nm ，在這樣的情況下忽略磁場效應可以比較精確地測量等離子體冕區（ 0 . 1n _ o ）電子密度。
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