branching ratio 中文意思是什麼

branching ratio 解釋
衰變分支比
  • branching : n 1 分支；分流；分科；支線；支流；支脈。2 【物理學】分支放射；【化學】支化（作用）；【電學】叉形...
  • 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. Plants growing in the semi - fixed sand dunes, on the other hand, were less branchy with a larger number of first - year shoots which were longer, and grew faster ; their leaves were longer and wider with a low length / width ratio. the characteristics of the branching system and leaf dimensions of the plants in fixed sand dunes were rather intermediary between those of the above. the frequency distribution and their frequency in the herb layer the scrubs also varied with habitats

    丘間低地的黃柳灌叢當年枝平均長度增加緩慢，短枝條的比例較高，當年枝枝長頻度分佈峰值偏左，葉片短而狹，長寬比大；與之相比，分佈於半固定沙丘的灌叢當年枝平均長度增加較快，長枝條比例較高，葉片長而寬，長寬比小；固定沙丘上的上述特徵大致介於二者之間。
  2. Using the beam propagation method ( bpm ) simulation, we confirm that wide controllability of the branching ratio and low excess loss can be realized by this structure

    用bpm方法模擬的結果表明，此結構實現了50 - 94的不對稱分支比，並且具有低的附加損耗的特點。
  3. For the low water head water control project at a branching channel, its flood discharge capacity is related not only with the total discharge width but also with the discharge width ratio of the two branches

    摘要位於分汊河段的低水頭樞紐，其泄洪能力不僅與樞紐的總泄流寬度有關，而且與兩汊泄流寬度之比有關。
  4. A wide range of the branching ratio can also be achieved for the asymmetric case. using supermode theory, i compared the design results of directional coupler by means of 2d mode and 3d mode and designed 3db directional coupler using 3d bpm and couple mode theory

    實際的設計過程中，考慮到定向耦合器輸入波導和輸出波導部分的耦合影響，圍繞耦合模理論計算結果手動調節耦合區長度，並應用三維bpm來模擬設計，得到耦合區長度，設計了精確的3db定向耦合器。
  5. Some microscopic theoretical analysis indicates the branching ratio of the transitions near zero degree is not sensitive to the halo structure. the complete angular distribution of the " h ( 6he, 6li ) n reaction has to be measured to reveal the halo structure of the second exited state of 6li

    有的微觀理論分析表明， 0附近的該躍遷強度比對是否存在暈結構不敏感，要想揭示~ 6li第二激發態的暈結構，應該測量~ 1h （ ~ 6he ， ~ 6li ） n反應完整的角分佈。
  6. The author has calculated the spontaneous radiate probabilities, the linear oscillator strengths, branching ratio of tm3 + iones by judd - oflet theory. according to the j - o calculated data, the transition 1g4 ? 3h6 was stronger than the transition 1g4 ? 3h4. it was agreement with the emission spectra

    3 ）對tbzre玻璃，用j ? o理論計算了各光譜參數，從1g4能級的躍遷分支比從理論上得出480nm波長的光相對650nm波長的光強，這與發射光譜圖是相符合的。
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