全对称

The resarch studies the space-like hypersurfaces with constant square of length of second fundamental form in locally symmetric Lorentz spaces, Some sufficient conditions for the hypersurfaces to be totally umbilical are obtained.

研究局部对称Lorentz空间中第二基本形式模长平方是常数的类空超曲面，获得了这类超曲面是全脐的若干充分条件。

Theorem 4 There is no compact totally real 2-harmonic submanifold with non-zero parallel mean curvature and positive sectional curvature in a locally symmetric Bochner -Kaehler manifold.

定理4局部对称Bochner-Kaehler流形中不存在具有非零平行平均曲率向量且截面曲率大于零的紧致全实2-调和子流形。

We denote by M_n and S_n the space of n×n fullmatrices and the space of n×n symmetric matrices over F, respectively.

记M_n和S_n分别为域F上n×n全矩阵空间和n×n对称矩阵空间。

During these years (1997-2000) in the research area of annonaceous acetogenins 5 natural products and a number of chiral-pure analogs of annonaceous acetogenins have been synthesized using sugars as the starting materials. Their high activity and selectivity against cell line of colon tumor and a relationship between activity and configuration have been found too. In the respect of inhibitor of sialidase two new methodologies for the synthesis of chiral-pure 3-deoxy-ulosonic acid using hetero-Diels-Alder reaction or asymmetric propargylation as the key reaction were developed. On the topic of anti-leukemia marine natural product clavulactone a synthetic method based on the free radical cyclization and starting from sugar has been developed. In other title of PKC inhibited agent sphingosine a new synthetic route with SN2' as the key reaction has also been disclosed.

项目期间（1997-2000）在番荔枝内酯方面从糖出发合成了五个天然产物和一批手性纯的类似物，它们对肠癌细胞有很高的活性和选择性，并与构型有关；在唾液酸酶抑制剂方面发展了二类全新手性纯高碳糖的合成方法－杂原子D－A反应或丙炔基不对称加成为关键的反应；抗白血病海洋天然产物群柱虫内酯方面研究了由糖出发和自由基环化反应的合成方法；对PKC 起抑制作用的鞘氨醇方面也开创了新的合成途径－由糖出发并以SN2'反应为关键反应。

In Particular, the tangent stiffness matrix in the incremental relation becomes symmetric, ensuring the efficiency in the numerical analysis, whereas the integrated constitutive relation serves as a guide, ensuring the convergence on the physically feasible stress strain relation.

值得一提得是，增量本构方程中的切线劲度矩阵是对称的，使得在进行数值分析时十分有效。而全量本构方程作为确保实际可行的应力应变滞回圈收敛的向导。

And we show that if such a immersion is also semi-parallel, it must be totally geodesic. Moreover the same results hold for semi-symmetric submanifolds in a nontrivial complex-space-form.

我们证明了如果它还是半平行的，则它必是全测地浸入，而且这一结果对于复射影空间和复双曲空间中的半对称浸入也成立。

Based upon a systematic review on the study of subtropical anticyclone, in this study, the mechanism linking the formation of subtropical anticyclone in boreal summer to zonally asymmetric diabatic heating is investigated via data diagnosis, theoretical study, and numerical experiment. The complete form of the tendency equation for vertical vorticity development, the NCEP/NCAR reanalysis data, and the IAP/LASG GOALS climate model are employed for the study.

本文在回顾有关北半球副热带高压研究的基础上，基于全型垂直涡度倾向方程，利用NCEP／NCAR月平均资料和IAP／LASG GOALS气候模式，从资料诊断、理论研究及数值试验三方面研究了纬向非对称非绝热加热对北半球夏季副热带高压形态变异影响的物理机制。

Corolla purple to blue or white or yellow to red, zygomorphic, inside glabrous or puberulent; tube campanulate-cylindric to broadly tubular, sometimes ampliate basally, throat sometimes constricted, 1-4 X longer than limb, 2-8(-12) mm in diam.; limb slightly 2-lipped to 2-lipped; adaxial lip 2-lobed, slightly shorter than to nearly as long as abaxial lip; abaxial lip 3-lobed to 3-sect, lobes equal or subequal, apex rounded to acute.

花冠紫色到蓝色或白色或黄色对红色，左右对称，被微柔毛的里面无毛或；圆筒状的钟状的筒部对宽管状，有时基部，有时缢缩的喉，X长于瓣片，2-8毫米直径；对二唇形有点二唇形的瓣片； 2裂的正面唇，稍短于到近等长于背轴唇；背面的唇3浅裂的到3全裂，裂片等长或近等长，先端圆形的到锐尖。

The essay using panel data from 29 districts, through the way of full sample, diachronous and trans-regional, analysis the influence agricultural financial institute and agricultural loan exerts on agricultural economy. The author also finds out the main reason of the lack of formal supply to Chinese rural finance. It is because the anisomerous messages.

文章采用29个地区面板数据，全样本、跨时、跨区域实证分析了我国农村金融机构、农村贷款对农村经济的影响，指出中国农村金融市场正规金融供给不足的主要原因是信息不对称，并分析了农村正规与非正规金融的优劣势，提出了增加农村金融供给的创新路径。

But some of the familiar stuff includes boxer engines and Subaru's symmetrical AWD.

但是，一些熟悉的东西，包括拳击手发动机和斯巴鲁的对称全轮驱动系统。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。