查询词典 compounds

It is imaginable that the catalytic system could be used in cross-coupling of aryl bromides with other active methylene compounds.

预计该催化体系可以广泛用于溴代芳烃与其它含活泼亚甲基化合物的交叉偶联反应。

Aryl acid compounds are provided in accordance with the invention.

本发明提供了芳基酸化合物。

The HEED, XRD, and XPS results confirmed the forming of intermetallic compounds between silver and rare earth. As far as silver and lanthanum be concerned, the format of intermetallic compound is AgLa.

由此，本文首次提出了稀土元素在稀土金属间化合物中的能量传递模型，认为稀土与银金属间化合物的4f能级位于费米能级附近下方，部分局域化且与导带部分耦合。4f能级与导带能级之间的电子跃迁是稀土元素在Ag-BaO薄膜中传递能量的方式，也是光电发射增强效应的来源，而4f电子的光吸收截面随入射光子能量的增加而增大的特点则是"蓝强"现象的原因。

Ascidian , a kind of marine organisms , has received significant attention for its role in ecology restoring and abundant active compounds in its body in recent years. Research on seperation and pharmaceutical application has been undertaken on.

近年来，海鞘因其体内含有丰富的活性物质，逐渐成为研究的热点，这些研究包括生理活性物质的分离、结构确定及药学应用等。

A growing pile of evidences has indicated that the'host-helping'effects are ascribable to the production of the bioactive compounds by endophytes which are accepted to play an important role in the development of agriculture and medicine.

内生菌发挥这些作用的物质基础是其丰富多样的次生代谢产物，它们往往具有多种生物活性和／或新颖的结构，在农业和／或医药业中具有重要的应用前景。

Asphaltum: Natural mineral compounds consist of carbon, hydrogen, sulphur and nitrogen or the residue from distillation of petroleum, coal tar or rosin.

沥青：天然产生的沥青是含有碳、氢、硫和氮的矿产化合物。人造沥青是蒸溜石油，煤焦油或松脂后的余下渣滓。

The average percent content of saturated hydrocarbons and aromatic hydrocarbons is changed from 56.32% to 60.38% and from 21.44% to 22.97% respectively, and resins compounds are increased by 2.09%, and asphaltum is reduced to 1.29%.

原油经配伍菌作用后含蜡质量分数平均降低17.56%，含胶质量分数平均降低26.54%，处理后的原油表观黏度与处理前相比降低50%，原油流动性得到改善。

AWhen e-e interactions are neglected,the ground state of MX compounds is astable CDW in M sublattice accompanied by BOW in X sublattice.

1在不考虑电子—电子相互作用时，MX化合物的基态是M次晶格上稳定的电荷密度波伴随着X次晶格上的键序波。

The Astrochemistry Laboratory researches on extraterrestrial materials and especially the formation, distribution, and fate of organic compounds (comprised primarily of carbon, like those in living things), space environments including interstellar, cometary, and planetary ices, extraterrestrial organic molecules that made the Earth habitable and may have even been involved in the origins of life.

天体化学实验室主要研究地球外物质，尤其是有机化合物（主要组分是类似生命物质中的碳）的形成，分布以及结果，空间环境，包括星际的，彗星的，和行星的冰层，以及那些使地球可居住和可能参与生命起源的地球外有机分子。

Chiral amino-hydroxy compounds have been proved to be a very efficient class of ligands in a variety of catalytic asymmetric syntheses and chiral auxiliary synthesis catalyzed by metallic ions.

手性氨基-羟基化合物是一类用于催化不对称合成和手性辅助合成的重要配体。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。