查询词典 ideal conditions

Simulations show the integrated can achieve the ideal yaw rate with small roll angle and small side slip angle at the center of the gravity under the various running conditions, especially under the critical conditions The handling, stability and active safety are effectively improved by the control system

该系统可大大提高各种转向特性的汽车在各种行驶条件尤其是恶劣条件下的操纵稳定性和主动安全性。

The proposed approach is verified by two cantilever beam experiments under ideal boundary conditions and uncertain end conditions, and the approach presented here is suitable for crack identification in engineering even if small frequency measuring errors exist.

对于理想边界条件下的裂纹参数识别，在测量频率存在小误差情况下，该方法仍能给出比较满意的结果，对于非完全固支边界条件下的裂纹参数识别，利用本文方法能得到比Narkis的方法更精确的裂纹位置识别结果。

The influences of derivations and adjoint ideal semigroups of prime ring with characteristic 2 on the prime ring are discussed, and several sufficient conditions for the prime ring being communitive ring or S4-ring and some necessary conditions for a class of prime rings being communitive rings are obtained.

先给出了一个利用导子和理想来判断素环的可交换性结论的证明，然后讨论了特征为2的素环的导子和归联理想半群对这个素环的影响，得到了素环成为交换环或者S4-环的几个充分条件及一类素环成为交换环的必要条件。

In this paper,the concept of ideal of ring is spreaded by widening the satisfying conditions of the subring of ring,thus the concept of weak nearly-ideal is drawn out,and several basic properties of weak nearly-ideal are given.

通过对环的子环所满足的条件进行加强，推广了环的理想概念，引入了弱近理想的概念，讨论了弱近理想的性质，以及弱近理想与近理想、理想、弱理想的关系。

This work, concentrated on the asymmetric allylation of aldehydes controlled by different chiral auxiliaries prepared from rotational pure tartaric acid, can be divided into three parts.The first part aims to review the developments of chiral drugs and asymmetric synthesis, from which derived the present research topic backgrounds and works.Synthesis and applications of allylation from aldehydes are the second part of the thesis. By optimizing the reaction conditions, such as solvents, temperature, time and chiral auxiliaries like N,N\'-dibenzyl tartamide, N,N\'-p-dimethylphenyl tartamide, N,N\'-o-dimethylphenyl tartamide, N,N\'-o-dichlorophenyl tartamide, N,N\'-a-dinaphyl tartamide, N,N\'-dicyclohexyl tartamide and N,N\'-diphenyl tartamide, ideal experimenttal conditions are obtained according to HPLC monitoring, as well as the auxiliaries\' recoveries experiments. Starting from benzaldehyde and 3-bromopropaldehyde, N,N\'-dibenzyl tartamide is considered the best auxiliary in this reaction.

本文介绍了醛的不对称烯丙基化反应，以光学纯酒石酸为原料，研究了不同构型手性配体在醛的烯丙基化反应中的立体选择性，全文共分三部分十个章节：第一部分对当前手性药物和手性技术进行了概述，并由此展开了本文的研究背景和任务；第二部分为有机合成部分，对醛的不对称烯丙基化反应进行了深入探讨，以苯甲醛为原料对反应条件进行优化，在优化的反应条件下对制备的七种可回收手性酰胺配体(N-苄基酒石酸二酰胺、N-对甲苯基酒石酸二酰胺、N-邻甲苯基酒石酸二酰胺、N-邻氯苯基酒石酸二酰胺、N-a-萘基酒石酸二酰胺、N-环己基酒石酸二酰胺和N-苯基酒石酸二酰胺)进行筛选，优化配体回收实验条件，最终确定出N-苄基酒石酸二酰胺在苯甲醛的不对称烯丙基化反应中具有较大优越性，结晶回收的手性配体光学纯度保持不变。

The results showed: when TLC solvent system was: chloroform - methanol - diethyl amine = 90:9:1, alkaloids from lotus leaves were well isolated, and five components were isolated and identified by spraying Dragendorff reagent. The optimal conditions of HPLC solvent system were: methanol- water - diethyl amine = 75:25:0.0125. Under the conditions, components of alkaloids from lotus leaves were separated very well, and ideal RP-HPLC peaks were obtained.5、Methods of High Speed Counter Current Chromatography and preparative High Performance Liquid Chromatography applied to identify and purify alkaloids from lotus leaves were set up. When solvent system of HSCCC was: chloroform - methanol - water (pH=4.00)= 4:3:2, speed of chromatogram was 700rpm, flow speed of the mobile phase was 2mL/min, four pure components relatively were attained by isolation and purification.

结果表明：薄层层析溶剂系统为氯仿：甲醇：二乙胺=90：9：1，使荷叶中的生物碱达到了较好的分离效果，并用改良的碘化铋钾试剂喷雾显色，共分离鉴别出了5种荷叶生物碱；分析型HPLC分析检测的较优溶剂系统为甲醇：水：二乙胺=75：25：0.0125，使荷叶生物碱的各个组分达到了基线分离，并获得了较好的峰形。5、建立了高速逆流色谱和制备型HPLC技术分离纯化荷叶生物碱的具体方法。H(来源：ABC46论文网www.abclunwen.com)SCCC法在溶剂系统为氯仿：甲醇：pH4.00的水=4：3：2，色谱仪转速为700rpm，流动相流速为2mL／min的条件下，分离纯化得到了4个纯度较高的化合物。

These are ideal conditions for producing excellent quality grapes.

这些都是优质葡萄生长的理想条件。

Examples of ideal conditions are given below for uninterrupted flow facilities and for intersection approaches.

下面的例子对不理想的情况下，对流通设施的交叉方式。

It Balkan mountains to the north peak of barriers to block the North to the wind; Strelkov Maria River and the Hon River Valley penetration; Warm Mediterranean wear Gap from the south and along the river that are blowing the humid air, to the growth of Rose provided the ideal conditions.

它北面以巴尔干山高峰为屏障，挡住北来寒风；斯特列玛河和登萨河流贯谷内；地中海暖流从南部穿峡沿河而过，吹进了湿润空气，给玫瑰的生长提供了理想的条件。

The theoretical results of the atmospheric Cherenkov images of a muon on the focal plane of a reflector are given under the ideal conditions.

给出理想条件下聚光镜焦平面上单个μ子大气契仑柯夫光像的理论结果。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。