駐波系數 的英文怎麼說

中文拼音 [zhùbōxìshǔ]
駐波系數 英文
vswr
  • 駐 : 動詞1. （停留） stay; halt; stop 2. （住在執行職務的地方; 設在某地） be stationed; encamp
  • 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...
  • 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 系數 : [數學] coefficient; ratio; modulus; quotient; factor
  1. If the velocity of atoms is near to zero, the light for ces will tend to confine the atoms near to nodes and antinodes. the stability depends on the magnitude of the negative slope of the light force, the depth of the potential well and the momentum diffusion coefficient. it is important to select the parameters, e. g

    如果通過激光冷卻能使原子速度降至很小甚至為零，光壓力的作用將使原子被較穩定地囚禁于激光駐波場的節點和反節點處，其穩定程度取決于該處光壓力曲線負斜率的大小、對應勢能的勢阱深度以及動量擴散系數的大小，因此，如何在實驗中合理選擇激光強度、失諧量等顯得尤為關鍵。
  2. The sound absorption coefficiet of osb was tested by the stationary wave method. the results showed that the osb had good sound absorption property compared with brick and concrete

    採用駐波管法測定定向結構刨花板的吸聲系數，分析比較了定向結構刨花板與磚、混凝土吸聲性能的差異。結果表明，定向結構刨花板具有良好的吸聲性能。
  3. The key technique include nip signal ' s generation, serial port 422 communication, control system data acquisition and processing, stationary wave ratio of antenna, sending and receiving signal ' s attenuation of antenna and so on

    其關鍵技術包括nip信號產生， rs - 422串口通信，控制系統各模塊數據採集和處理，機載天線駐波比及收發信號衰減測量等。
  4. Code for measurement of sound - absorbing coefficient and specific acoustic inpedance of standing - wave

    駐波管法吸聲系數與聲阻抗率測量規范
  5. Measurement of sound - absorbing coefficient and sound - resistance rate by method of standing wave tubes

    駐波管法吸聲系數與聲阻抗率測量規范
  6. In this thesis, a semi - classical model of the force on an atom is used to describe the motion of a two - level atom interacting with a standing wave laser field. the velocity dependent force and momentum diffusion are derived through optical bloch equations by using the matrix form of the continued fraction technique. by investigating the dynamic properties of atoms in laser field, we can control and manipulate the mechanical motion of an atom

    本文利用半經典理論，從二能級原子在激光駐波場中所滿足的運動方程出發，推導出密度矩陣元所滿足的遞推關系，利用矩陣連分數方法求解出密度矩陣元，從而求出依賴于原子運動速度的光壓力與動量擴散系數，通過討論原子在激光場中的動力學行為，為原子在激光場中被囚禁、形成原子列陣以及可控制的量子態，從而為量子信息處理提供理論基礎。
  7. A 1 / 10 - scale model quasi - fractal rcl - loaded monopole antenna was fabricated and measured, which has a bandwidth ratio of about 10 : 1, with vswr less than 3. 0, calculated system gain greater than - 9. 4db and the efficiency above 14 %

    加入寬帶匹配網路后，對其10 : 1的縮比模型天線進行了測試，在全頻率段內駐波系數小於3 ，理論增益大於- 9 . 4db ，效率大於14 % 。
  8. Acoustics - determination of sound absorption coefficient and impedance in impedance tubes - part 1 : method using standing wave ratio

    聲學.阻抗管中吸聲系數和阻抗測定.第1部分:駐波比率法
  9. Using the fresnel matrix method, the standing wave distribution of the vertical - cavity surface - emitting laser ( vcsel ) was designed and analyzed

    摘要應用薄膜光學的菲涅耳系數矩陣方法，對垂直腔面發射激光器的駐波場分佈設計做了深入的研究。
  10. The sound absorption coefficient of the material was tested by standing wave tube method

    採用駐波管法測試材料的吸聲系數。
  11. A numerical simulation software is developed that can be used to simulate standing oblique detonation waves in hypervelocity flight conditions. reasonable parameters and advanced method are provided for the application of standing detonation propulsion technology. the main points are as follows : the mathematical model is developed that can be used to analyze the properties of planar standing oblique detonation waves

    通過對駐定斜爆轟波形念的理論分析和數值模擬，對高超音速條件下斜爆轟波的穩定性現象進行了系統研究，探討了產生駐定斜爆轟波的臨界條件，開發了平面和錐形駐定斜爆轟波流場數值模擬軟體，為駐定爆轟推進技術的應用提供合理的系統參數和先進手段。
  12. Vswr connectors for electronic equipment - tests and measurements - test 25g - impedance, reflection coefficient and voltage standing wave ratio

    電子設備連接器.試驗和測量.試驗25g .阻抗反射系數和電壓駐波比
  13. Vswr connectors for electronic equipment - tests and measurements - part 25 - 7 : test 25g - impedance, reflection coefficient and voltage standing wave ratio

    電子設備連接器.試驗和測量.第25 - 7部分:試驗25g :阻抗反射系數和電壓駐波比
  14. Acoustics - determination of sound absorption coefficient and impedance in impedances tubes - method using standing wave ratio

    聲學.阻抗管中吸聲系數和阻抗的測定.使用駐波比的方法
  15. The method of moments is used to analyze and calculate the broadband characters of impedance, voltage satanding wave ratio ( vswr ), gain and radiation pattern of larger angle lpda, and the relation between these characters and the parameter of antenna construction is discussed in this paper. based on analysis and calculation, the antenna is designed and tested, and the measured results are in good agreement with the theoretical calculation

    本文採用矩量法分析和計算了對數周期天線在張角較大時，它的阻抗、電壓駐波比、增益及方向圖的寬帶特性，討論了這些特性與天線結構參數之間的關系.根據分析和計算，設計並製作天線進行實驗測試，理論計算和測試結果表明，兩者吻合較好
  16. These researches provide us a basis for forecasting the pests in grain in earlier stage, accurately utilizing pesticides, improving the efficiency of prevention and reducing the loss of stored grain. the sound absorption properties of various types and thickness of grain are measured by means of the standing wave tube technique. the following conclusions can be drawn : for the same thickness the larger grains has a smaller sound absorption coefficient than the smaller grains

    為了有效地研究儲糧害蟲所產生聲信號在各種糧食中的傳播特性，本文採用駐波管法，對十一種不同種類糧食在不同堆積厚度情況下的吸聲性能進行了實驗研究，糧食吸聲特性與其顆粒的大小、形狀、排列方式及糧食堆積厚度等有關，存在一定的規律，得出如下結論：同一厚度下，顆粒大的糧食較顆粒小的吸聲性能差，顆粒由大到小，吸聲系數峰值頻率向低頻方向移動；球形顆粒糧食較長形顆粒吸聲性能差。
  17. Use eda software to simulate the optimization z sand z l in pa designation. 3. theoretically deep analysis is made which is about the method of lna design, analysis the affect of noise figure and input vswr to the system sensitivity and the contradiction between the two parameter

    3 .從理論上低噪放設計方法進行深入的研究，系統的分析低噪放的輸入駐波比和噪聲系數這兩項指標對接收機系統靈敏度的影響以及兩者之間的矛盾。
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