查询词典 unsymmetrically

There were few successful examples of regioselectivity in reactions of unsymmetrically allylic derivatives, and enantioselectivities obtained with prochiral nucleophiles.

因而我们选用反应机理相对比较清楚的钯催化烯丙基取代反应来研究平面手性的作用。

Summarizing the results from this analysis, it was revealed that the analytic contained abundant components of neolignans , having dimeric phenyl propanoid structure with unsymmetrically condensed benzofuran skeleton attached with different sugar moieties.

结果显示此部分为富含木质素类化合物，所分析出的化合物多为首次在该植物发现，其中有massonianoside D(1)、7、8和C-veratroylglycol (9)为已知化合物，而2~6、10~14是新颖天然物成分。

Unintended traditional drama of the artless space, where weaves unsymmetrically by repeating and becoming a frame pictorially with the continuity that seems unlimitedly, becomes a root of Lim Geo Dang's spatial story.

无意的传统戏剧的烂漫的空间，在那里织不对称重复，成为与连续性，似乎形象地敞开框架，成为党的林缘的空间故事的根源。

For generalization, we present the measurements under symmetrically and unsymmetrically air-supplying conditions, respectively.

为验证结果的合理性与正确性，用风速计直接测量了对称条件下的速度场，用CFD软件对对称和非对称情况分别进行了流场模拟。

A type of chiral molecular tweezers has been designed and synthesized by using diphenic acid as spacer and chiral unsymmetrically disubstituted urea as arm for the first time.

近年来，利用合成的人工受体与适当底物间的分子识别以建立仿生仿酶模型的研究，已成为生物有机化学和超分子化学前沿领域之一lL】。2 J。

Simulating the tunnel with shallow-depth and eccentrical compression with numerical simulation techniques, it is known how the bolt-shotcrete support, the unsymmetrically loading, water and etc.

对沪蓉西高速公路龙潭隧道浅埋偏压洞口施工过程进行了数值模拟，分析了锚喷支护、偏压作用、水的作用等诸多因素对围岩稳定性的影响。

The seats are placed unsymmetrically, allowing more space for passengers to get in and out of the carriage.

同时在每个门口都设置了残疾人和老年人的优先座位。

The earth's rotation acts on these unsymmetrically deposited masses, and produces centrifugal momentum that is transmitted to the rigid crust of the Earth.

地球的旋转作用于这些不平衡的沉积物质量，而产生的离心力被传送到地球的硬外壳上。

It can produce unsymmetrically load when it is nearby the arch of the tunnel.

由于煤柱附近存在明显的应力集中，其与隧道的空间位置关系对隧道稳定性有较大影响，当位于隧道拱腰上方时，会使隧道产生扁压。

The infrared radiation characteristics of unsymmetrically two dimensional nozzle are experimentally studied. UTDN is designed and manufactured by prolonging one broad side of a general two-dimensional nozzle AR8 and its aspect radio is 8. Temperature distribution on the axes and spectral IR intensity on the orientation of 0, 10, 30, 60 and 90° on three typical detective planes of the hot plume are measured on hot plume simulation platform of the turbo fan engine.

为了研究非对称二元喷管(Unsymmetrically two-dimensional nozzle， UTDN)的红外辐射特性，首先以宽高比为8的常规二元喷管(AR8)为基础，设计加工了UTDN，然后在涡扇发动机热喷流实验台上测量了UTDN轴线上的温度分布以及在后半球典型探测面内0， 10， 30， 60和90°方向上的红外光谱辐射强度，积分得到辐射强度的空间分布，并在相同的实验条件下，与AR8进行了比较。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。