impulse ratio 中文意思是什麼

impulse ratio 解釋
脈沖比例
  • impulse : n. 1. 沖動；【物理學】沖量；推進力；脈沖，【醫學】沖動，搏動。2. 鼓舞，刺激；一時高興，興奮。vt. 推動。
  • ratio : n. （pl. ratios）1. 比，比率，比值；比例；系數。2. 【經濟學】復本位制中金銀的法定比價。vt. 1. 用比例方式表達；求出…的比值；使…成比例。2. 將（相片）按比例放大或縮小。
  1. The results showed that the thrust - weight ratio reached 1. 04 for the launch weight 5400kg in the condition of specific impulse near 600s

    結果表明:在發動機工作比沖接近600s的情況下，對于起飛質量為5400kg的飛行器而言，推重比為1 . 04左右。
  2. To optimize specific impulse to 700s or 800s, the thrust - weight ratio could be improved to 1. 23 or 1. 41, it is enough to achieve the launch requirement for this vehicle

    進一步將比沖優化至700s或800s ，可以將推重比提高至1 . 23或1 . 41 ，這樣就完全能夠保證發射任務的完成。
  3. Standard test method for dynamic young ' s modulus, shear modulus, and poisson ' s ratio by impulse excitation of vibration

    利用振動的脈沖激勵測定動態楊氏模量剪切模數和泊松比的標準試驗方法
  4. Standard test method for dynamic young ' s modulus, shear modulus, and poisson ' s ratio for advanced ceramics by impulse excitation of vibration

    用振動脈沖激勵法的高級陶瓷動態楊氏模量剪切模量和泊松比的標準試驗方法
  5. Much works has been distributed to the development of a vacuum system to simulate the outer space and a measurement system to test the arcjet performance. ignition experiments in various operational modes have been done with argon as propellant. macroscopical working parameters including thrust, mass flow rate, voltage, current, inlet pressure and vacuity are obtained by the test measurement system and actual performance parameters including specific impulse, thrust efficiency, ratio of thrust and power and ratio of power and mass flow are calculated

    以氬氣作為推進劑，在不同工況下進行點火實驗，測量獲得了其工作推力、電弧電壓和電流、推進劑流率和弧室壓力等宏觀參數，得到了不同實驗條件下其工作的實際比沖、推力效率、推力/功率比以及比功率等性能參數，分析了推進劑質量流率、電弧功率、電弧加熱發動機電弧室結構尺寸等因素對其性能的影響，為數值模擬研究和實際的低功率電弧加熱發動機優化設計及研製提供了實驗基礎。
  6. Finally, by practical test, experimental data obtained show that the dynamic thrust measuring system is dramatically available and successful. especially, it shows that when the impulse width is 20ms and the duty ratio is 1 : 3, the measured results are stable and reliable. hence, the system designed here can meat the test requirements of the actual applications, and the technology studied in the thesis also give a good foundation to future research work

    最後，系統建成以後，通過多次調試試車、考核試車和實際型號試車的考核，試車結果表明，該系統的設計是成功的，動態推力數據穩定、可靠，可滿足發動機以20ms脈寬工作，占空比為1 : 3的情況下，進行發動機的動態推力性能指標測試，滿足實際應用的需求，為進一步進行動態推力測試技術研究奠定了良好的基礎。
  7. Information of system auto and cross spectrum, auto and cross correlation. coherent function, signal to noise ratio, frequency response and impulse response was established to help the study and arrangement of the module components

    由力規及加速規兩量測之時域訊號，經快速富利葉轉換，計算其自頻譜及互頻譜，再經反富氏轉換回時域之自相關及互相關函數、相通函數、訊噪比、頻率響應函數、脈沖響應函數。
  8. The research of propellant energy performance indicates that the special impulse and characteristic velocity are significantly depended on o / f ratio and weakly depended on chamber pressure

    過氧化氫和pe燃料組合的能量研究表明：發動機的比沖和特徵速度與配比密切相關，與燃燒室壓強關系不大。
  9. The motor special impulse can be enhanced with the best o / f ratio reduced by increasing the concentration of hydrogen peroxide or adding aluminum powder in the fuel

    提高過氧化氫濃度或在燃料中添加鋁粉可以降低最佳配比，並提高發動機的比沖。
  10. At present, arcjet has been the highlight of investigation and application because of its high thrust density, high ratio of thrust and power, preferable specific impulse, better system successiveness and reliability

    電弧加熱發動機以較高的推力/功率比、推力密度、中高的比沖、良好的系統繼承性和可靠性等特點，已經成為當前國際研究和應用的熱點。
  11. Arcjet is one of the highlight of electric propulsion investigation and application because of its high thrust density, high ratio of thrust and power, preferable specific impulse, better system successiveness and reliability

    作為電推進的一種方式，電弧加熱發動機以較高的推力/功率比、推力密度、中高的比沖、良好的系統繼承性和可靠性等特點，成為當前國際研究和應用的熱點。
  12. Electroporation will acceleration cellular confluence of protoplast and muscles, but the significant change of the ratio of expression and the time of expression was not observed form exponent treat with low pressure and short impulse of 100v, 50 millisecond

    電擊可以促進原生質體與肌肉細胞的融合，但100v ， 50毫秒的低壓、短脈沖電擊對grf在動物體內的表達量上沒有被觀察到顯著差異。
  13. Test method for dynamic young ' s modulus, shear modulus and poisson ' s ratio by impulse excitation of vibration

    利用振動的沖擊激磁產生動態模量剪切模量和泊松比的試驗方法
  14. Arcjet, one type of electric propulsion, is high at specific impulse and ratio of thrust, and good in capability of propellant. thus it is being researched and applied in several countries

    電弧加熱發動機就是電推進的一種，它具有較高的比沖和推力/功率比以及良好的推進劑普適性，已成為國際研究和應用的重點。
  15. The results of research indicate that the pressure, the thrust and the fuel regression rate of the motor decrease while the o / f ratio increasing with the burning time lasting. the special impulse reduces when throttling

    研究結果表明：壓強、推力和燃料退移速率隨發動機工作時間增加而降低，氧化劑和燃料的配比升高；節流時，發動機比沖降低。
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