以及

The second chapter discussed the definition and nature of dashes inverse A in generalized inverse as well as its application in compatible linear equations. The third chapter discussed the definition and calculation of the minimum norm inverse A in generalized inverse, as well as the Minimal Norm Solution of its compatible linear equations Ax = b.

前言从引进广义逆矩阵的定义着手，介绍了它的历史概况以及发展的背景及其意义；第1章从广义逆的发展历程讨论由Moore-Penrose方程确定的各种广义逆的定义；第2章讨论广义逆中的减号逆A 的定义及性质以及在相容线性方程组的应用；第3章讨论广义逆中的最小范数逆A 的定义及计算以及它与相容线性方程组Ax=b的极小范数解。

The preface gave the definition and introduced history, background of development and significance of generalized inverse matrix. The first chapter, from the development process of generalized inverse, discussed all kinds of definition of generalized inverse determined by the Moore - Penrose equations. The second chapter discussed the definition and nature of dashes inverse A in generalized inverse as well as its application in compatible linear equations. The third chapter discussed the definition and calculation of the minimum norm inverse A in generalized inverse, as well as the Minimal Norm Solution of its compatible linear equations Ax = b.

前言从引进广义逆矩阵的定义着手，介绍了它的历史概况以及发展的背景及其意义；第一章从广义逆的发展历程讨论由Moore-Penrose方程确定的各种广义逆的定义；第二章讨论广义逆中的减号逆A 的定义及性质以及在相容线性方程组的应用；第三章讨论广义逆中的最小范数逆A 的定义及计算以及它与相容线性方程组Ax=b的极小范数解。

The nacre of molluscan shell, which is composed of inorganic aragonite tablets and a few percent of organic polymers filling between the tablets, is a wonderful natural composite material.

软体动物的贝壳珍珠质是由文石板片(CaCO_3晶体)以及少量填充在板片之间的有机质组成的一种天然的复合材料，具有复杂的形貌以及良好的力学性能、光学性能，其文石板片与有机基质交替叠层排列的微结构以及文石晶体的结晶学取向是珍珠层具有优异的力学性能的重要原因之一。

The nacre of molluscan shell, which is composed of inorganic aragonite tablets and a few percent of organic polymers filling between the tablets, is a wonderful natural composite material. It shows complex forms, and fascinating mechanical and optical properties.

软体动物的贝壳珍珠质是由文石板片(CaCO_3晶体)以及少量填充在板片之间的有机质组成的一种天然的复合材料，具有复杂的形貌以及良好的力学性能、光学性能，其文石板片与有机基质交替叠层排列的微结构以及文石晶体的结晶学取向是珍珠层具有优异的力学性能的重要原因之一。

The gray balance curves were obtained by the gray balance function and regression analysis. The main works: The parameters in the mathematic models were ascertained, as well as all the regression functions. The models included the relation between the ink quantity and the solid density, the relation between the gamma and printing contrast, the printing reproduction curves, the dot-gain curves and the dot-gain compensation curves. The fitting accuracies of the regression models were checked out by the correlation coefficient or multiple correlation coefficients. The effect that the ink had on the solid density and the gamma on the printing contrast were analyzed. And the methods of choosing the ink and gamma were gained.

主要工作：确定了墨量与样张实地密度、γ与相对反差、阶调复制曲线、网点扩大曲线以及网点扩大补偿曲线各自数学模型中的参数，得到了回归表达式；得到了各个回归表达式的相关系数或复相关系数，检验了回归模型的拟合程度；分析了墨量对实地密度的影响以及γ对相对反差的影响，并提出了墨量和γ的选取方法；得到了喷墨印刷质量控制的灰平衡控制、网点扩大以及扩大补偿规律。

This paper presents natural vibration experiment and sine excitation experiment of the frame with different energy dissipation braces （the little character brace or the unidirectional diagonal brace or the little- character-toggle-brace）and compared their capability of energy dissipation.

介绍了空框架以及附加单向斜撑、小八字撑以及小八字曲拐撑的4种结构的自由振动试验以及正弦稳态激振试验，比较了其消能能力。

The alliance will also see the optimisation of connections between regional and domestic flights with the introduction of the Zambezi Airlines regional routes and increased frequency and capacity on the existing Proflight Zambia domestic schedules servicing Mfuwe, Ndola, Solwezi, Chipata and Livingstone.

这个合作关系同时也将地区航班以及国内航班的连接扩大，透过赞比西航空区域航班的推出，增加了班次的以及载客量的波福来特赞比亚国内航班，他们将往来于弗韦、恩多拉、索维济、齐帕塔以及李文斯顿。

The influence of the signal power, the signal ER, the probe power, the probe wavelength and the drive current of the SOA on λ pk,s and the improvement of the ER is studied in detail by using the multisection model, and considering the nonsymmetry of the gain profile and the shift of the gain peak wavelength along with the carrier density.

采用分段模型，考虑了SOA中增益谱的不对称性以及增益峰值波长随载流子密度的漂移，深入研究了信号光功率，ER，参考光功率，波长以及SOA注入电流对选择信号光波长λpk，s以及消光比改善量的影响。

Screening methods currently used for Down vary in sensitivity, which is 30% for maternal age alone, 60% to 70% for maternal age plus maternal blood-testing in the second trimester, 75% for maternal age plus first-trimester fetal nuchal translucency scanning, and 85% for maternal age plus fetal nuchal translucency plus maternal-blood analysis at 11 to 14 weeks.

最近用於预测唐氏症的筛检方法在敏感度方面变化很大，仅考虑母亲的年龄，敏感度为30%；考虑母亲的年龄以及母亲在怀孕四至六个月的血液检查，敏感度为60%-70%；考虑母亲的年龄以及胎儿前三个月的颈背透明度扫描，敏感度为75%；考虑母亲的年龄、胎儿颈背透明度以及怀孕11至14周母亲的血液检测，敏感度为85%。

Furthermore, ed embryo exhibit extra C.N.S. and P.N.S. neurons. Ed also serves in Drosophila eye development and mesothoracic bristle development. Photoreceptor cells of the ommatidium and bristles are sensory nerves. We suggest that Ed might meditate the development of the nervous tissues.

此外，ed mutant胚胎有过多的中枢以及周边神经细胞生成，Ed亦参予在果蝇复眼发育以及背板刚毛的形成过程，果蝇复眼感光细胞以及刚毛均为周边神经细胞，显示Ed对於神经细胞生成具有某种程度的影响。

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。