零比零的

On the middle shelf a chipped eggcup containing pepper, a drum of table salt, four conglomerated black olives in oleaginous paper, an empty pot of Plumtree's potted meat, an oval wicker basket bedded with fibre and containing one Jersey pear, a halfempty bottle of William Gilbey and Co's white invalid port, half disrobed of its swathe of coralpink tissue paper, a packet of Epps's soluble cocoa, five ounces of Anne Lynch's choice tea at 2/- per lb in a crinkled leadpaper bag, a cylindrical canister containing the best crystallised lump sugar, two onions, one, the larger, Spanish, entire, the other, smaller, Irish, bisected with augmented surface and more redolent, a jar of Irish Model Dairy's cream, a jug of brown crockery containing a naggin and a quarter of soured adulterated milk, converted by heat into water, acidulous serum and semisolidified curds, which added to the quantity subtracted for Mr Bloom's and Mrs Fleming's breakfasts, made one imperial pint, the total quantity originally delivered, two cloves, a halfpenny and a small dish containing a slice of fresh ribsteak.

还有一个小玻璃瓶，里面装着加了芳香剂的糖果。中层放着一只盛了胡椒粉的有缺口的蛋杯，饭桌上还摆着那种鼓状食盐瓶，用油纸包着的四颗粘成一团的黑色橄榄，一听李树商标肉罐头的空罐儿，垫着纤丝的椭圆形柳条筐里是一只泽西梨，喝剩下的半瓶威廉。吉尔比公司釀造的药用白葡萄酒（裹在瓶子上的粉珊瑚色薄绘纸已剥掉了一半），一包埃普斯公司制造的速溶可可；一只绉锡纸袋里装着安妮。林奇公司出品的五英两特级茶叶，每磅二先令；一只圆筒形罐子，盛着优质结晶角沙糖；两颗葱头，较大的那颗西班牙种的是完整的，较小的那颗爱尔兰种的已经切成两瓣儿，面积扩大了，气味也更冲鼻了；一罐爱尔兰模范奶场的奶酪，一只褐色陶罐，盛着四分之一品脱零四分之一兑了水并变酸了的牛奶（由于炎热，它已化为水、酸性乳浆与半固体凝乳，再加上布卢姆先生和弗莱明大妈作为早餐消费掉的部分，就足够一英品脱了，相当于原先送来的总量）；两朵丁香花蕾，一枚半便士硬币和盛有一片新鲜排骨肉的一个小碟子。

The common method, that all strong-correlation terms of the model are eliminated, can bring the loss in the engineering application, so the new method is proposed that the identified model reserves some correlation. The augmented matrix A is constructed by the outputΔW and the matrix S. The"determinating order based on ratio of determinant"is brought out to screen the strong-correlation terms in the structure identification. The latent root estimation is improved in screening the eigenvalues and eigenvectors. Thus the estimation precision is improved greatly.The consistence check of guidance instrument error coefficients of flight test and ground test is the purpose of flight experiment. The causes of inconsistency of the two models are analyzed. The hypothesis test of linear regression model based on F statistics is proposed to check the consistence.Finally, the instability of error coefficients is probably caused by the change of the flight environments, therefore, the relation between the error coefficients and flight environment is analyzed. The approach is presented to identify SINS guidance instrument error models and compensate the error in the segmented sections corresponding to the change of vertical acceleration of aircraft.

在结构辨识中，常用的方法由于将模型中的强相关项全部剔除而给工程应用带来损失，因此，本文提出了新的有益思想，即在保留一定相关性的基础上进行辨识：将输出向量ΔW与环境函数矩阵S构成增广矩阵A，然后采用"比定阶行列式"来剔除相关向量的方法，这样既可以尽可能多地保留了对落点影响大的强相关参数，又可以对落点影响小的强相关参数给予剔除；在参数估计中，改进了特征根估计中特征根和特征向量的筛选方法，提出"近零"准则，从而大大提高了参数估计的精度；再者，鉴于天地模型"一致性"检验是飞行试验和SINS制导工具误差系数分离的主要目的，因此，本文又深入分析了造成天地模型不一致的原因，提出了采用基于F统计的线性回归模型假设检验方法来进行捷联制导工具误差模型的天地"一致性"检验；最后，鉴于飞行环境剧烈变化可能会对惯性仪表误差系数稳定性带来一定的影响，因此本文深入地分析了SINS制导工具误差系数与外界环境的关系，提出了基于过载变化大小的分段辨识和分段实时补偿的算法。

The influences of the shock thickness and Alfven waves on the particle acceleration by diffusive shock waves are numerically studied through solving one-dimensional diffusive equation including the second-order Fermi effect. It is shown that the spectral index of the energetic particles strongly depends on the shock thickness. For example, the spectral index increases from 2.1 to 3.7 in the low energy range of 3-10 MeV and from 2.5 to 5.0 in the high energy range of 20-60 MeV as the thickness increases. The spectral index decreases from 4.3 to 3.1 as the particle injection energy increases. The spectral index decreases from 4.0 to 1.8 at the quasi-steady stage with the enhancement of the compression ratio from 2 to 4. The results indicate that under the influence of Alfven waves, the energetic particle spectrum at lower energy becomes flat and the spectral index decreases from 2.5 to 0.6 in the low energy range of 3-10 MeV and from 11.6 to 5.0 in the high energy range of 20-60 MeV. At the same time, the rollover energy reaches 19.6 MeV. The spectral index decreases from 5.8 to 2.9 as the energy density of Alfven waves increase. All these results are basically consistent with the theoretical models, as well as the observations of typical energetic particle events.

通过数值求解包含二阶费米加速的一维扩散方程，探讨在准平行激波条件下激波厚度和级联阿尔芬波对粒子加速的影响，研究粒子分布函数的演化与激波厚度和阿尔芬波强度的内禀关系，计算结果表明：(1)考虑激波厚度时，谱指数明显依赖于激波厚度，随着厚度从0.32增大到2.56，低能端(3-10MeV)谱指数逐渐从2.1增加到3.7，高能端(20-60MeV)谱指数从2.4增大到5.0，能谱逐渐变软；当初始注入粒子动量增大1.3倍，质子能谱指数从4.3减小到3.1，且与零厚度激波加速的谱指数差值缩小；厚度不变时，随着压缩比从2增加到4，准稳态分布时低能端(3-10MeV)粒子能谱指数逐渐从4.0减小到1.8谱变硬；(2)在级联阿尔芬波的影响下，随着时间的增大，粒子在低能处(3-10MeV)的谱指数从2.5减小到0.6高能端(20-60MeV)谱指数从11.6减小到5.0，能谱变硬，拐点能量值从7.5MeV增大到为19.6MeV；随着波的能量密度增大，谱指数从5.8减小到2.9，这表明阿尔芬波强度越大，加速效率越高，通过与激波厚度解析结果和高能粒子事件的观测能谱比较发现两者是一致的，说明数值模拟结果是可靠的。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。