branching ratio
英 [ˈbrɑːntʃɪŋ ˈreɪʃiəʊ]
美 [ˈbræntʃɪŋ ˈreɪʃioʊ]
分支比；分歧比
双语例句
- The plants growing on external support with larger diameter have higher branching ratio, shorter stem, longer shoot, longer specific stem length and larger specific petiole length than those growing on the external support with small diameter.
生长于大直径支持物上的植株比生长于小直径支持物上的植株表现出较高的分枝率、较短的主茎、较长的分枝、较大的比茎长和比叶柄长。 - Based on the BS theory, in this paper, solves the wave function of r and K, calculates form factors of transition for B-P and B-K, and also calculates branching ratio of B meson and Non-lepton disintegration and CP destruction.
在BS理论框架下，求解了ρ和K的波函数，计算了B→ρ和B→K跃迁的形状因子，进而计算出B介子衰变到2个轻介子稀有过程的分支比和CP破坏量。 - The branching ratio of the decay of the k~+-meson
K~+介子衰变的分枝比 - And find that its molecular weight and distribution have relation with the product's degree of branching, according to different feeding ratio.
在不同投料比下，发现枝化度越高，聚合物分子量越小，分子量分布越宽，产率越高； - Fine Structure Branching Ratio for Rb-Ne Optical Collision
Rb-Ne光学碰撞精细结构分支比 - Higher diurnal temperature variation at branching was suitable for higher 11S/ 7S ratio.
分枝期较大的昼夜温差利于提高11S/7S比值； - The results show that with the increase in the Er 3+ concentration, the oscillator strength and spontaneous transition probability A of Er 3+ increase, while the fluorescence branching ratio β of Er 3+ shows little difference.
结果表明振子强度基本上随Er3+离子浓度的增大而增强；随着Er3+离子浓度的增加，自发辐射跃迁概率A基本呈现出递增的趋势，但荧光分支比β却只有很小的变化； - Optical Fiber Directional Coupler with Continuously Variable Branching Ratio
分光比连续可调的光纤定向耦合器 - Intensity calibration of monochromators in vacuum ultraviolet wavelength region by atomic branching ratio method
利用分支比方法作真空紫外光谱仪的强度校准 - The fiber directional coupler with branching ratio of 1/ 1~ 1/ 30 has been fabricated.
做出了分光比在1/1～1/30之间变化的光纤定向耦合器。 - It was implied that the decline of starch synthesis enzyme activities was relative to the decrease of starch component, and the increase of the activity of starch branching enzyme played an important role in the decrease of ratio of amylose to the total starch under weak light.
分析指出，遮光下淀粉合成酶活性的降低与淀粉合成量的下降有关，淀粉分支酶活性的升高是直链淀粉占淀粉总量的比率减少的重要原因。 - The branching-ratio of two modes of decay of K-meson by a functional method
泛函方法中K-介子两种衰变的分支比 - The branching ratio of radiative decay of π~+ mesons
π~+介子辐射衰变分枝比 - Meanwhile we give a brief description of several methods of calculating the hadron matrix elements, and discussed the QCD factorization in details especially. And at last, we presented the theoretical formulae for the branching ratio of two-body decays B → PP.
同时简单的评述了计算强子矩阵元的几种方法，重点讨论了我们将要用到的QCD因子化方法，并给出了计算B介子衰变B→PP的强子矩阵元的理论公式。 - The lifetime, branching ratio and integrated stimulated-emission cross section were obtained and the results were discussed.
计算了各个能级跃迁的谱线强度、振子强度、吸收截面等，进而计算了3H4和3F4态的自发跃迁概率、辐射寿命、荧光分支比和积分发射截面，并对结果进行了分析。 - This allows the extractions of the form factor| f π+ ( 0)| and the CKM matrix element| V cd| using the measured branching ratio.
利用计算结果和测得分支比来研究形状因子fπ+（0）及CKM矩阵元Vcd。 - Dissociation of the NaK ( E) State and Branching Ratio of the Na ( 3P_J) Fine structure Levels
NaK（E）态的离解和Na（3PJ）精细结构分支比 - For the reaction with two different product channnels HD+ H → H+ DH, D+ H2, time-dependent wavepacket ( TDWP) method is used in the calculation of the reactive probability and branching ratio with specific initial state.
用含时波包（TDWP）理论计算了具有两个不同产物道的反应HD＋H→H＋DH，D＋H2的初态确定的反应几率及生咸物的分支比。 - The transition branching ratio between the energy levels was taken into consideration for the first time while discussing the influence of up conversion.
在上转换效应影响的讨论中首次考虑了能级间跃迁分支比。 - From the beginning of branching period, ratio of K deficiency symptoms leave in tolerant varieties ( lines) gradually reduced or maintained at a low level.
从分枝期开始，随着生长发育的推移，耐低钾大豆品种（系）症状叶比率逐渐降低或保持在低的水平；低钾敏感大豆品系症状叶比率逐渐上升或一直保持在高的水平。 - Change the concentration of rare earth ions and adjust glass matrix. Testing density, refractive index, absorption spectra, fluorescence spectra of glass; Using J-O theory, calculation the J-O intensity parameters, fluorescence branching ratio, fluorescence lifetime of glass.
改变掺杂稀土离子浓度和调整玻璃基质，测试玻璃的密度、折射率、吸收光谱、荧光光谱；运用J-O理论，计算玻璃的J-O强度参数、荧光分支比、荧光寿命。