均差

In this paper the influence of coma and spherical aberration on the far-field distribution and antenna receiving power is analyzed, in which aberration attenuation factor is introduced and the relation of it to root mean square of wavefront aberration is given.

分析了球差和彗差对信号光远场分布、天线接收光功率的影响，引入了畸变衰减因子，给出了畸变衰减因子与波前畸变均方根值的关系。

The design process of the passive optical athermalisation was elaborated by an example. The result was analyzed with an optical design software. It shows that the design result meets the requirement of eliminating the thermal difference and chromatism at the temperature range of -40℃～+60℃.

最后用实例说明光学被动式无热化设计的求解过程，并通过光学设计软件对结果进行分析，说明该设计结果在-40℃～+60℃温度范围内均满足消热差和像差要求。

The coefficients for eliminating the thermal difference and chromatism of common infrared materials were described by Cartesian coordinates.

最后用实例说明光学被动式无热化设计的求解过程，并通过光学设计软件对结果进行分析，说明该设计结果在-40℃～+60℃温度范围内均满足消热差和像差要求。

RESULTS: Symptoms of all the patients undergoing bone marrow stem cell transplantation were alleviate to a certain extent. Edema and feeling of ponderosity were moderated evidently. Cicatricle was softened. The difference of affected and unaffected sides its upper limb dropsy patients was (9.2±1.4) cm before treatment, and (3.5±0.9) cm after 3 months of treatment. The difference of affected and unaffected sides in lower limb dropsy patients was (8.2±1.3) cm before treatment, and (3.7±0.6) cm after 3 months of treatment.

结果：所有接受自体骨髓干细胞移植的患者，症状均有不同程度的改善，肢体肿胀明显消退，肢体沉重感减轻，瘢痕软化，上肢水肿患者术前健侧与患侧差值为(9.2±1.4)cm，治疗后3个月为(3.5±0.9)cm，下肢水肿患者术前健侧与患侧差值为(8.2±1.3)cm，治疗后3个月为(3.7±0.6)cm。

Thereby, these facts indicate that the SDE not only have better statistic properties but also have uniformly smaller mean square errors than ANOVAE in an available group of linear mixed models. The other significative following work is to generalize the idea of SDE to multivariate linear mixed model and obtain the SDE of variance component matrices which uniformly dominate the ANOVAE either.

对于含有一个随机效应的混合模型，目前文献中都仅讨论了方差分量的谱分解估计和ANOVA估计等价的充要条件，本文首次给出了方差分量的谱分解估计在均方误差意义下严格的优于ANOVA估计的理论结果，并推广到广义谱分解估计，从而说明谱分解估计不仅较ANOVA估计有更好的统计性质，而且在一类常用的模型下有更小的风险损失。

In order to get the numerical solution, the paper devises a three hierarchic implicit scheme which eliminates the strict restriction of explicit scheme, thus, it can be used in more areas. By using the energy estimation method, the convergence and stability of the difference scheme are proved and the scheme is second order convergence for time and space.

对求解方程构造了一个三层隐式差分格式，消除了显格式的稳定性对计算步长的严格限制，使之适用范围更广，并用能量估计的方法严格证明了差分格式的收敛性与稳定性，该格式对于时间和空间均具有二阶收敛性。

In discrete operator difference method, the displacements of the elements can be reproduced exactly in the discrete forms whether the displacements are conforming or not.

在离散算子差分方法中，无论单元位移函数是否协调，其位移函数均能在离散格式中得到十分好再现，说明了离散算子差分方法的离散格式是一种性能很优良的离散格式。

The 1-4 order variation law of frequency, energy and distance of MS events before destabilizing can display the change rule of MS events. According to the variation law of the difference of frequency, energy and distance of micro seismic events before destabilizing, the fracture of rock mass can be precisely predicted. This is of great importance for safety of colliery.

微地震事件的距离、能量、频数的一到四阶差分均能够显示微地震事件的变化规律，根据未失稳岩体微震事件距离、频数、能量差分变化规律，能够准确地利用微震监测技术预报岩体破裂，这对于采用微地震监测技术解决矿山井下岩体破坏失稳预报具有重要指导意义。

The result indicated that the service quality of engine overhaul shop v.s customers' satisfaction had significant difference;the interaction of service quality and organization performance of engine overhaul shop v.s customers' satisfaction had significant difference;and different service point distance、organization scale and customers' military rank v.s service quality 、organization performance and customers' satisfaction all had no significant difference.

研究结果发现：发动机修护工厂的服务品质对顾客满意度有显著差异；服务品质与组织效能两因素的交互作用对顾客满意度均有显著差异；及不同的服务点距离、组织规模与顾客阶级服务品质、组织效能与顾客满意度等均无显著差异，在所有24项假说中检定不成立者计3项、成立与部分成立者亦计21项；另由各变数之积差相关分析得知，服务品质构面之有形性因素与各因素间为微弱或无相关，顾客后续行为意图与其他各因素大都为低度相关，其余因素间的相关性大体上均为中、高度相关。

The issue is that balance current is much lower than charge current which decreases the efficiency of shunt circuit.

本文分析了现有的超级电容器限幅型均压电路和动态均压电路的特点与实用性以及存在的问题，其本质就是均压电流远低于充电电流，导致分流效果差。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。