1) Percentage of Particles
粒子比率;粒子数目百分比
2) ratio of number of particles
粒子数比
3) grain percentage
魔粒率;磨料百分比
4) population inversion ratio
粒子数反转比
1.
The theoretical studies of the upper state population inversion ratio for erbium-doped tellurite-based fiber amplifier(EDTFA) are presented, and its distribution curves with the activated fiber length, each channel signal input power, bi-directional pumping power and erbium-doped concentration, respectively, are also obtained.
对宽带碲基掺铒光纤放大器(EDTFA)上能级粒子数反转比进行了理论研究,得到了碲基掺铒光纤 放大器上能级粒子数反转比随着光纤激活长度、信号输入功率、泵浦功率和纤芯掺杂浓度的演变关系,分析了 上能级粒子数反转比分布与EDTFA信号增益间的关系。
5) the fractional number of molecules
分子数比率
1.
The results show that using Vp one can compare one distribution with another, and especially that the fractional number of molecules with a velocity between V1 and V2 only relates to the ratio V1/vp and v1/ Vp, but not to the kind and the temperature of gas.
结果表明,利用vp可以比较两个分布的特点,特别是分布在任一速率区间v1-v2内的分子数比率只与比值v1/vp及v1/vp有关,与气体的温度和种类无关。
6) number of particle
粒子数目
1.
The influences of the number of particles and the range of initial values adopted for water quality parameters to be evaluated on the convergence of the PSO algorithms were studied by numerical experiments.
分别就粒子数目和待估水质参数的初始取值范围对算法运算过程的影响进行了数值实验。
补充资料：粒子数比
分子式：
分子量：
CAS号：
性质：符号为R，粒子i与粒子k的粒子数比定义为粒子i的粒子数Ni除以粒子k的粒子数Nk。粒子数比为无量纲量。当粒子本身就是物质的量的基本单元时，粒子数比等于物质的量比。
分子量：
CAS号：
性质：符号为R，粒子i与粒子k的粒子数比定义为粒子i的粒子数Ni除以粒子k的粒子数Nk。粒子数比为无量纲量。当粒子本身就是物质的量的基本单元时，粒子数比等于物质的量比。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条