查询词典 B.A.

In this note, we show that for any two matrices A and B over a generalized quaternion algebra defined on an arbitrary field F of characteristic not equal to two, if A and B are similar and the main diagonal elements of A and B are in F, then their traces are equal.

本文对于特征不是2的任意域F上定义的广义四元数代数上的两个矩阵A和B，给出如果A和B相似并且它们的主对角线上的元素在F中，那么它们的迹相等。

In this note, we show that for any two matrices $A$ and $B$ over a generalized quaternion algebra defined on an arbitrary field ${\bf F}$ of characteristic not equal to two, if $A$ and $B$ are similar and the main diagonal elements of $A$ and $B$ are in $\bf F$, then their traces are equal.

本文对于特征不是2的任意域${\bf F}$上定义的广义四元数代数上的两个矩阵$A$和$B$，给出如果$A$和$B$相似并且它们的主对角线上的元素在${\bf F}$中，那么它们的迹相等。

Multiple wavelengths characteristics of dayside aurora activities were investigated with these keograms and in reference to all-sky images. It was found that there are three repeatedly appearing aurora activity regions along the dayside aurora oval. They are, Region A around 0900MLT in which aurora moves poleward while its intensity decreasing, and its form changingfrom arc to corona with time; Region B around 1330MLT in which aurora moves equatorward while its intensity increasing, and its form changing from corona to arc in time; Region C around 1330MLT in which aurora expands poleward while its intensity decreasing, and its forma evolving from arc to multiple arcs in time. There is a narrow belt of aurora activity in North-South direction between Regions A and B, which is dominated by weak and red corona aurora.

初步分析发现，沿日侧极光卵不论磁静日还是磁扰日，在三个波段上都同时观测到了四个重复出现的极光活动区，即0900MLT附近的A区、1330MLT的B区和1630MLT的C区以及1200MLT附近的G区。A区内的极光活动由低纬向高纬运动，强度逐渐变弱，形态由较宽的弧状极光向冕状极光演变；B区内的极光活动由高纬向低纬方向运动，形态呈现为冕状极光向较窄的极光弧的演变，极光强度逐渐增强；C区极光活动向高纬方向展宽，强度逐渐变弱，极光由单弧向多重弧演化；而在A与B之间存在一个纬度范围相对较窄的极光活动区G区，该区的极光呈现暗弱的冕状极光。

A; What's its name B: Sorry, I can't remember it.A: Who wrote it B: A famous scientist.A: What does it look like B: It is very thick and has a lot of beautiful pictures in it.A: How many pages does it have B: More than 300.A; I see. I'll try to find it for you. B: Thank you.

提示：假如你去图书馆借一本有关地理方面的书，你告诉图书管理员你忘了书名，只记得它是由一位著名的科学家写的，书很厚，有300多页，书中有许多漂亮的图画。

Full-term pregnancy of primipara 120 cases of illness; Stochastic double divides into three groups: research of group-A group and B group. control group of C group, A group (n=40), 0.75% levobupivacaine 10mg for CSEA, B group (n=40), 3% chloroprocaine the hard membrane pericoel hinders, C group: 0.75% bupivacaine for under the arachnoidea the cavity hinders the anaesthesia, In surgery process, to A and B groups, 2% lidocaine were intermittently injected respective-ly by epidural cathete, effec not enough of anesthesia.

足月初产妇120例随机双盲分成三组：研究组为A组和B组，对照组为c组。A组(n=40)蛛网膜下腔阻滞麻醉用药为0.75%左旋布比卡因10mg，使用腰麻硬膜外联合阻滞行剖宫产术，B组(n=40)以3％氯普鲁卡因为硬膜外麻醉的局麻药，使用硬膜外麻醉阻滞行剖宫产术，c组(n=40)腰麻用药为0.75%布比卡因10mg，使用腰麻硬膜外联合阻滞行剖宫产术。

Bipyridyl and 1,10-phenanthroline (L3), Cl3SnCH2CH2COORo L (L= L1, a; L2, b; L3, c), formed by low-heating solid-state reaction. The crystal structures of 1 and 2 show that the tin atom adopts a distorted trigonal bipyramid geometry via intramolecular carbonyl oxygen to tin coordination [the distances of Sn-0 bond are 0.2351(6) ran for 1 and 0.2362(3) nm for 2]. Compound 1 belongs to monoclinic with space group P2/c, a = 0.9842(2) nm, b =1. 0923(8) nm, c = 1.23948(11) nm,/?= 93.894(15)°, V= 1.3294(4) ran3, Mr = 366.23, 7 = 4. Compound2 belongs to monoclinic with space group P2{/c, a = 1.04443(9) nm, b = 1.04823(7) nm, c = 1.28113(9) nm,/= 90. 953(8)°, V= 1.40239(19) nm3, Mr = 380.25, Z = 4

利用元素分析、红外光谱、核磁共振对其结构进行了表征，并通过X射线单晶衍射测定了1和2的晶体结构，二者均为具有分子内羰基氧原子配位的畸变三角双锥结构。1属于单斜品系，空间群P21/c， a=0.9842(2)nm，b=1.0923(8)nm，c=1.23948(11)nm，β=93.894(15)°，V=1.3294(4) nm^3，Mr=366.23，Z=4.2属于单斜晶系，空间群P21/c，a=1.04443(9)nm，b=1.04823 (7)nm，c=1.28113(9)nm，β=90.953(8)°，V=1.40239(19)nm^3，Mr=380.25，Z=4。

According to the emprical results,we draw this conclusion that there is a bi-directional casuality between A and B shares volatility in Shanghai stock market,while there is no evident and reliable Granger-casuality between A and B shares volatility in Shenzhen stock market.

本文利用时间序列分析中的格兰杰因果关系检验法对中国证券市场A、B股的波动性进行分析，发现上海市场A、B股的波动间存在双向因果关系，而深圳市场A、B股的波动间则不存在显著可信的因果关系。

At three months, the latency and wave amplitude of regenerating nerve were 2.74 0.49msx 19.02 2.32mv respectivly in group A, and 2.32 0.46ms, 21.04 1.09mv respectively in group B, there was no statistical difference in both groups, no regenerating nerves were found to bridge the gaps and cicatrices formed, the results could not be acquired.

肌电图测量及分析术后2月电生理检测再生神经的潜伏期及波幅，A组分别为3.37±0.54ms、13.82±1.73mv，B组分别为2.82±0.49ms、17.45±1.51mv，A组低于B组(p＜0.05)，3个月时A组潜伏期及波幅分别为2.74±0.49ms、19.02±2.32mv，B组分别为2.32±0.46ms、21.04±1.09mv，A、B两组无显著性差异(P＞0.05)。C组仅见瘢痕组织，无神经纤维再生连接缺损处，无法进行检测。3。

And more, ERK contents between group A and B, group C and D were not dramatically different. The pathological lesions indicated that intestinal tissue necrosis was severe in group C and D, which were graded 3 points, but obviously lessened in group A and B, which was graded 1 point, with ITF interfering. Conclusion: Intestinal inflammation was ameliorated after ITF was injected hypodermically or intraperitoneally.

结果：A、B组组织匀浆中ERK的面密度值各为87.68±19.24、82.65±21.35，较C、D组(30.23±7.79、30.74±8.19)明显升高(P＜0.01)，C、D组与E组(5.41±1.46)比较也有升高(P＜0.05)；并且随著ERK的激活伴随著明显的核转位。A、B组间及C、D组间ERK含量无显著差异(P＞0.05)；病理切片显示C、D组HE染色切片见肠壁损伤轻重不一，可见全肠粘膜绒毛坏死，病理评分的中位积分为3分；A、B组肠上皮细胞少量脱落，顶端绒毛坏死，病理评分的中位积分为1分。

The invention provides the application of a B vitamin, a physiologically or pharmaceutically acceptable salt of the B vitamin, a hydrate of the B vitamin or a mixture of the B vitamin, the salt and the hydrate in the preparation of a composition for controlling body weight and blood sugar and/or moderating the insulin resistance.

本发明提供了B族维生素、其生理学上或药学上可接受的盐、其水合物或它们的混合物在制备控制体重、控制血糖和/或缓解胰岛素抵抗的组合物中的用途。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。