真馬赫數 的英文怎麼說
中文拼音 [zhēnmǎhèshǔ]
真馬赫數
英文
true mach number-
The real reasons behind better security are 1 ) the cooperation of iran ; 2 ) the freeze on all paramilitary activity by the mahdi army of muqtada al - sadr ; 3 ) the anti - al - qaeda sunni groups ( the anbar awakening council ) that currently number approximately 30, 000
安全局勢轉好的真正原因為以下幾點： 1 ）伊朗的合作； 2 ）對薩德爾的馬赫迪軍所有準軍事行動的凍結； 3 ）反基地組織的遜尼派團體（安巴爾覺醒會）成員的數目現在已接近30000 。The two - dimensional axisymmetric subsonic - transonic - supersonic flow in an experimental arcjet thruster is simulated numerically using flux vector splitting method. the profiles of density, velocity, temperature, pressure and mach number can be obtained by the computation. the computation grid and some computed results are given here. the test equipment such as power supply system, ignition system, propellant supply system, arcjet thruster, thrust measuring device and vacuum system are introduced briefly. some working phenomena of the arcjet are observed and discussed. three different kinds of instability appeared in the process of the experiments. except some important parameters are measured, it is found that the operating stability of argon is better than that of nitrogen
對一實驗電弧加熱式發動機二維軸對稱亞跨超音速流動進行了數值模擬，所採用的方法是矢通量分裂演算法.通過計算可以得出密度、速度、溫度、壓力和馬赫數的分佈.給出了計算所使用的網格和一些計算結果.簡要介紹了實驗所使用的設備，如電源系統、點火系統、推進劑供給系統、電弧加熱式發動機、推力測量裝置和真空系統.對所觀察到的一些工作現象進行了討論.有三種不同的不穩定性出現于實驗過程.除了所測量的一些重要參數，通過實驗發現氬比氮工作更穩定
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