查询词典 mean square

Some statistical properties, such as mean-square radius of gyration and shape factor are calculated in order to illuminate how the size and shape of the chains change in the process.

通过计算分子链的均方回转半径和形状因子等参数记录了高分子链的尺寸和形状及其变化过程。

The expression shows that when the reaction is close to complete and the r is fairly high, the mean-square radius of gyration of the copolymer is approximately equal to 〓 and is independent of r.

计算结果表明，与对应的线性聚合物相比，即使在支化度比较小的时候，超支化共聚物的均方回转半径还是会有比较大的下降。

We also studied the influence of degree of branching on the mean-square radius of gyration by numerical calculations and then get the Zimm-Stockmayer parameters.

另外，共聚物的平均分子量对Zimm-Stockmayer参数也有影响。

The non-local structural parameters, such as average molecular weight, molecular weight distribution and mean-square radius of gyration, have great influence on the properties of polymers.

计算结果表明，当初始单体含量较高的时候，扣除残余单体可以使体系的多分散指数大大降低。

Numerical calculation shows that the mean-square radius of gyration of hyperbranched copolymer decreases greatly compared with the analogous linear polymer even if the degree of branching is very small.

这是因为整个体系的Z均均方回转半径不仅和每个分子的均方回转半径有关，还和分子量的分布有关。

It was found that the effect of side groups on the characteristic ratios of mean-square radius of gyration is obvious for the short PDMS chains, and the confomational parameters 〈S^2〉/M of the larger chains about 7.76×10^(-3) nm^(-1), which agrees with the experiment data.

研究结果发现PDMS侧基结构对其短链的均方回转半径特征比影响较大，而长链时构型参数〈S^2〉/M值仍趋向于7.76×10^(-3)nm。^(-1)，与实验结果一致。

With studies on the configuration of polymers;the mean-square radius of gyration along z axis was always smaller than that along x or y axis regardless of the width of stripes.

对高分子构型研究的结果发现；无论条纹宽度如何变化；高分子在垂直于z方向的均方回转半径总是小于其垂直另两方向的值。

The technique of laser light scattering has been widely used in the investigations of biomacromolecule solutions, which can provide some more important parameters such as molar mass, root-mean-square radius of gyration, the second virial coefficients, diffusion coefficients and hydrodynamic radius. Therefore, it is very sutiable for the study of state behavior of biomacromolecule solutions.

激光散射技术在生物大分子溶液性质研究方面的应用越来越广泛，它可以提供大分子的重均分子量、均方旋转半径、第二维里系数、平动扩散系数及平均流体力学半径等重要参数，这对于研究生物大分子的溶液状态行为特别适用。

The analytical expressions of two kinds of pulse width of ultrashort hyperbolic secant pulses were deduced,i.e.the pulse width at full width at half maximum which was used generally and the root-mean-square pulse width which was precise.

利用理论推导和数值模拟方法，给出了超短双曲正割脉冲较为严格的均方根脉冲宽度与通常使用的半高全宽脉冲宽度的解析表达式，并对两种脉冲宽度进行了比较。

Simulation results show that the mean square error of initial yaw alignment is about 0.159°.

静止基座的初始对准仿真结果表明，航向失准角估计误差均方差为0.159°。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。