衰減率 的英文怎麼說

中文拼音 [shuāijiǎnlǜ]
衰減率 英文
attenuation rate
  • 衰 : 衰動詞（衰弱） decline; wane
  • 率 : 率名詞（比值） rate; ratio; proportion
  • 衰減 : attenuation; decay; damping; reduction; rejection; weakening; deamplification; dampening; dying o...
  1. There has been many papers to discuss the in - medium quark and gluon condensates in nuclear matter which use the models with su ( 2 ) l su ( 2 ) r sym - metry. now, we make use of the chiral model su ( 3 ) l su ( 3 ) n including the baryon octet to discuss the quark condensate < qq > in strange matter, where q is an up or down quark field. on the one hand, from the experimetal data, it is found that < qq > vac = - ( 225 25mev ) 3, on the other hand, with the hellmann - feynman theorem, quark condensate can be evaluated on the hadronic level. in this paper, we will investigate the quark condensate in strange matter with the chiral symmetry su ( 3 ) l x su ( 3 ) rspontaneous breaking lagrangian to obtain the variation of the quark condensate in the strange matter when the baryon number change. it can be applied to understand the neutron stars when the neutron star are considered to be constructed by the strange matter. because nertron stars are homogeneous and at very low temperature, we will use the mean - field approximation and zero temperature throughout this paper

    鑒于已有大量文獻討論了核物質中的夸克凝聚，本文將討論在奇異物質中的夸克凝聚。而在介質中的夸克凝聚的基本公式可由hellmann - feynman理論導出，所以運用手征對稱自發破缺拉氏量以及平均場近似，我們就可以討論在奇異物質中的夸克凝聚，由所計算的結果表明： （ 1 ）奇異物質中的夸克凝聚隨奇異物質密度的增大而單調減小。 （ 2 ） -凝聚的出現對衰減率有影響。
  2. The fatigue behavior of strength, stiffness, and deformation of concrete is analysed systematically. the fatigue equation is established. the empirical expressions of the total longitudinal strain and the elastic modulus are given, and the relationships between the increasing rate of the total second - stage strain and the decreasing rate of the elastic modulus with the cyclic number are obtained

    系統地分析了砼抗拉、拉-壓疲勞強度、剛度、變形規律；建立了相應的s - n關系，提出了縱向總應變、彈性模量的經驗公式，及其第二階段總應變增長率、彈性模量衰減率分別與疲勞壽命的關系式。
  3. The log decrement are suitable for determining interface bond damage.

    對數衰減率適宜於測定界面粘結的破壞。
  4. The hyperbolic conservation laws with relaxation appear in many physical systems such as nonequilibrium gas dynamics, flood flow with friction, magnetohydrodynamics, etc. firstly, the thesis proves that there exists a unique global smooth solution for the cauthy problem to the hyperbolic conservation laws system with relaxation ; secondly, in the large time station, the thesis proves that the global smooth solutions of the hyperbolic conservation laws system with relaxation converge to rarefaction waves solution at a determined l ( p > 2 ) decay rate

    帶鬆弛項的雙曲型守恆律組出現在諸多的物理系統中。例如，非平衡態的氣體動力學、帶摩擦的水流、磁動力學等。本文首先證明，帶鬆弛項的雙曲型守恆律組的柯西問題的整體光滑解的存在唯一性；其二，證明了帶鬆弛項的雙曲型守恆律組的解與相應的平衡態守恆律的稀疏波解在大時間狀態下的l ~ p衰減率。
  5. The results show that : nano - nickel powder is not useful for mh electrode during the high rate discharge phase as a conductor or additive ; superfine nickel powder is applicable for the conductor of the negative because of the good performance especially the cyclic stability at 1c rate by using 5 % ( mass percentage ) nickel powder ; the utilization of alloy, specific mass and volume capacity are increased with the decreased particle size of nickel powder in negative, however, the capacity fading rate at 1c discharge rate is also increased, so the capacity and the cyclic stability should be taken into account to make a choice of the particle size

    結果表明： mh電極中加入納米鎳粉對負極的大電流放電性能不利。 mh電極中加入超細鎳粉后電極綜合性能好，尤其是1c循環穩定性，其最佳添加量為5wt 。減小鎳粉粒度提高了電極合金利用率、質量比容量、體積比容量，但增大了負極1c容量衰減率，因此鎳粉粒度的選擇應綜合考慮mh電極容量和循環穩定性。
  6. When electrical parameter is changd by wet tunnel wall, electromagnetic wave propagation attenuation will vary

    摘要礦井隧道壁濕潤會引起電參數改變，從而使電磁波傳播衰減率發生變化。
  7. The results show the influence of conductivity is minor and can be ignored when the tunnel wall conductivity value is lower than the breakpoint ; however, when the value is bigger than the breakpoint, the influence is greater

    研究結果顯示：當電導率小於斷點時，電磁波衰減率幾乎不受影響，當電導率高於斷點時，電磁波傳播特性會有較大的變化。
  8. Optimal decay rate of a homogeneous euler - bernoulli beam with boundary control

    梁邊界控制的最優衰減率
  9. Standard test method for determination of decay rates for use in sound insulation test methods

    隔聲試驗方法中衰減率測定的標準試驗方法
  10. Standard test method for airborne sound attenuation between rooms sharing a common ceiling plenum

    共用一個天花板中通風系統的房間之間氣載噪聲衰減率的標準測試方法
  11. Revolutionary longwave image quality longwave 8 to 9m performance provides superb high definition image quality, ultra precise

    圖像性能提供極其精確的測量精度，低的大氣衰減率和高解析度的
  12. Especially, when the decay rates of the two frequency oscillations are same, the resonation will be strengthened greatly

    特別是當兩個弛豫振蕩的衰減率也相等的時候，共振現象極為強烈。
  13. Sphere - if this button is pressed the light shed by the source is confined in the sphere of radius distance rather than going to infinity with its decay ratio

    球體按下這個按鈕，光源發射的光線將被封閉再一個球體內，而不是按照衰減率發射到無限遠。
  14. The fva - uv is an opto - mechanical device that controls the amount of light transmitted between two optical fibers. internal disc varies attenuation from 0 - 100 %

    Uv是一個光學機械裝置，可控制在兩根光纖之間傳輸的光的數量，內部光片可在0 - 100 %改變衰減率。
  15. And, the attenuation rate rose out of fog is studied, calculating that and modeling it prediction formula using non - linear system identification method

    計算了霧的衰減率，並用非線性系統辨識方法得到了霧的衰減率的預報模型；計算了霧的反射率隨能見度的變化規律。
  16. Combining the results of the analysis on the bed resistance, the velocity distribution and the rules of index number n. " s changing, the mechanism of the abatise groups " beach protection and accretion promotion effect is sought. the result indicates that the conclusions of the thesis are reasonable and reliable and the index number n is effective for engineering application

    本文關于混凝土榪槎群水力學特性的主要研究結論，符合理論上的定性分析，得到了其它研究成果的印證，提出的指標（底流速衰減率、護底效果指標）的取值基本合理，可以作為工程應用和進一步研究的基礎。
  17. When frequency slightly higher than cutoff, using perturbation method it is to know that tunnel wall wet make attenuation of electromagnetic wave lower not only in rectangular tunnel but also in circular tunnel

    當頻率略高於隧道截止頻率時利用微擾法可知：不論是矩形隧道還是圓形隧道，隧道壁潮濕使電磁波的衰減率降低。
  18. When frequency much higher than cutoff, using classical formulation method it is to know that tunnel wall wet make attenuation of electromagnetic wave increase in rectangular tunnel and make attenuation of other electromagnetic wave mode increase but te mode with tunnel wall permittivity

    當頻率遠高於截止頻率時，利用傳統公式法可知：矩形隧道中隧道壁濕潤引起衰減增大；圓形隧道中e模式衰減率因電容率的增大而減小，其他各模式則因電容率的增大而增大。
  19. The results proved the feasibility of this enrichment technique. the enriched nitrifying bacteria can directly store in a lucifugal condition for a long time, the nitrifiers decay at a rate of 0. 0138d - 1. but the decay rate of the nitrifiers stored in phosphate buffer ( ph 7. 2 ) is 0. 023d - 1

    硝化細菌富集培養后直接避光保存是一種較佳的保存方式，經3個月的保存其硝化細菌存活率為26 . 7 ，其比衰減率為0 . 0138d ~ （ - 1 ）硝化細菌。
  20. Traces of dyes indicate that the stable length increases with an augment of h, and the relations between spatial attenuation rates of disturbance and wavenumbers are correspondent with theoretical results by the analysis of spatial mode

    染色線觀測顯示h值增大使擾動失穩距離增加，擾動衰減率與波數的關系同空間模式穩定性分析的理論結果定性一致。
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