查询词典 asymmetric

Over recent ten years, along with the development of an effective cytogenetical tool " in situ hybridization", asymmetric fusion of common wheat Triticum aestivum L.

最近十多年，随着有效的细胞遗传学工具—原位杂交技术的应用，普通小麦与不同亲缘禾谷类植物的不对称体细胞杂交得以快速发展。

Deflective occlusal contact is induced by excess and asymmetric abrasion, which is a common form of occlusal disease.

重度、不均匀的磨耗导致的咬合关系异常是咬合病最常见的一种形式。

In a similar way, using N,N\'-dibenzyl tartamide as auxiliary,-(2-methyl)allyl-2-chloro-phenyl-methyl azide, a vital intermediate of Repaglinide, can be prepared via asymmetric allylation of o-chlorobenzaldehyde in

产物经氧化和碘加成内酯化反应得到阿伐他汀中间体(3R，5S)-3-羟基-5-碘甲基戊内酯(10)；将N-苄基酒石酸二酰胺用于邻氯苯甲醛的不对称烯丙基化反应以较高光学收率得-甲基烯丙基-2-氯苯基-甲基醇

Based on random average method,Shapiro-Loginov formula and properties of asymmetric dichotomous noise,the explicit expression of the output amplitude gain is obtained.

利用随机平均法、Shapiro-Loginov公式和非对称双值噪声的属性，得到了平均输出幅度增益的精确表达式。

The phenomenon of stochastic resonance in an RC series circuit, whose time constant is fluctuated by asymmetric dichotomous noise, is investigated.

随机共振的概念是在20世纪80年代初提出的，用于解释第四纪全球气象冰川问题[1-2]。

Asymmetric over-introgression of the indica alleles on chromosome 7 and many specific regions on other chromosomes in the japonica genetic background is consistent with the general trend observed in the RIL and F_2 populations of the same cross, suggesting a high genetic load in the japonica gene pool, and japonica genome experienced a very severe bottleneck by artificial domestication.2 Genetic background effect on QTL expression of grain weight and its related traitsGenetic background effect on main-effect QTL and digenic epistatic QTL mapping for GWT and its related traits including GL, GW and GT was dissected by a large set of reciprocal introgression lines and recombinant inbred lines derived from Lemont and Teqing in Beijing environment.

籼粳相互导入具有不对称性，粳稻向籼稻背景的平均导入频率与期望值相仿，相反籼稻向粳稻背景的平均导入频率大大高于理论预期，位于第7染色体和一些其它染色体的特殊区段存在籼稻等位基因的超导入现象，在来自相同亲本的重组自交系和F_2群体中也观察到同样的导入趋势，表明粳稻基因组具有较大的遗传负荷，粳稻品种在人工驯化过程中曾经历过一个非常剧烈的遗传瓶颈。2水稻籽粒相关性状的主效和互作QTL表达的遗传背景效应利用Lemont和特青培育的双向导入系和重组自交系群体，在北京环境下定位影响千粒重及其相关性状如粒长、粒宽和粒厚的主效和互作QTL，分别在特青背景导入系、Lemont背景导入系和重组自交系下检测到影响千粒重及其相关性状的主效QTL分别为33个、27个和13个，互作QTL分别为4个、8个和23个，其中仅有6个主效QTL(QGwt5，QGl1，QGl3b，QGl4，QGw7和QGw8)在籼粳两个不同背景下共同表达，3个主效QTL(QGwt5，QGwt7a和QGt5)在导入系和重组自交系中共同表达，分别占检测到影响这些性状QTL总数的11.1%和4.3%，未检测到在3个背景下相同表达的互作QTL。

Studing on samarium diiodide promoted asymmetric intramolecular reducing coupling reactions, we have made the resolution of the racemic biaryl dials by using enantiomeric N-tert-butanesulfinamine as the resolving reagent successfully and thus obtained a series of axially chiral biaryl dials with high enantiomeric excess.

中文摘要在二碘化钐促进的分子内不对称还原偶联反应中，我们不仅对联芳基二醛底物的合成路线进行了优化，还发现N-叔丁基亚磺酰胺辅基可以作为手性试剂，成功地对联芳基骨架二醛化合物进行拆分，得到高对映体过量的轴手性二醛类化合物。

Configurational isomerism is then due to the presence in the molecule of one or more dissymmetric centers, in the simplest case asymmetric carbon atoms, each of which can have and absolute configuration; and, or, to the presence of double blonds which can the presence of double blonds which can give cis- and trans- geometrical isomers.

科技英语要求客观性，准确性和严密性，科技英语要求客观性，准确性和严密性，既满足语法修辞的要求，又符合逻辑和客观实际。

Leaves alternate or very strongly heterophyllous with 1 leaf of the pair reduced to a nanophyll very much smaller than the other, leaves usually distichous; leaf blade usually asymmetric.

叶互生或对退化至的非常强烈具异形叶的具1叶退化至一超微形叶远小于其它的，叶通常2列；叶片通常不对称。

Leaves apparently alternate, distichous; nanophylls present or absent, opposite to normal leaves; stipules 2; leaf blade 3-veined, one major lateral vein sometimes inserted above the base, or pinnately veined, base asymmetric, margin entire or serrate; cystoliths mostly present, linear or fusiform.

叶表面上互生，2列；微形叶宿存或无，对生于正常的叶；托叶2；叶片3脉，主要的一侧脉高于那些基部，或成羽状脉，基部不对称，边缘全缘或有锯齿；乳状体多数宿存，线或者纺锤形。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失