查询词典 molecular formula

With these characteristic ions in the HRFABMS spectra,the molecular weight and formula of this kind of compounds could be obtained easily.

将 EIMS和 FABMS结合起来可以快速准确地获得化合物的分子量、分子式以及相关的取代酰基等结构信息。

Ritz variation method was used to find the numerical relation between the energy near the ground-state of the hydrogen molecular ion H 2 + and the changes of the variation parameter and the bond length,the computation formula of bond length and ground-state energy for H 2 + was also obtained by means of the method of parabolic interpolation .

用Ritz变分法求出了氢分子离子H2 +基态能量附近的能量随变分参数和分子键长变化的数值关系，并用抛物线插值法获得了H2 +键长和基态能量的值及其计算公式，比文献 [1，2 ]更接近于实验值。

Company offers clients customized services, according to client provided by the molecular structural formula, for a variety of customized medicine, pesticide intermediates, organic reagents, chiral reagents and other organic chemical products, customized by the quantity of several milligrams to several tons.

公司提供客户定制服务，根据客户所提供的分子结构式，为客户定制各种医药、农药中间体、有机试剂、手性试剂等各种有机化工产品，定制数量可由几毫克到数吨。

Vascular hyperpermeability is one of the important causein hypovole-mia and organs disfunction after various kinds of shock,and its treatment is still one of the problems in the medical field. For example,the operative methods of preventing hyperpermeability and plasm bleeding is still unreliable after severity burn,and traditional treatment just passively transfuses according to the burn clysis formula instead of inhibiting permeability by injecting drugs. The principal reason is that pathogenesis of vascular endothelial cell permeabilty has not been entirely revealed at the level of molecular biology.

血管通透性增高是休克时有效血容量减少和器官功能损害的重要原因之一，它的防治一直是医学界的一个难题，如在大面积烧伤时，至今未能找到一个简单有效的防治血管通透性升高和血浆渗出丢失的方法，传统的方法只是根据烧伤补液公式测算进行被动的补液来纠正，而不能依靠注射化学制剂来终止其渗出，主要原因是未能从分子生物学水平揭示血管内皮细胞渗出的机制。

The AM method and the new formula are applied to study the full vibrational energy spectra and molecular dissociation energies of some electronic states of some homonuclear and heteronuclear diatomic molecules and some diatomic ions.

然后应用AM方法和离解能新公式对一批同核和异核双原子分子，以及双原子分子离子电子态的完全振动能谱和离解能进行了研究。

The physical maps of mtDNAs from N.taihuensis Chen,Salvelinus taxa and Salmo salar were analyzed.Genetic distances between mtDNAs were calculated by the formula of Nei and Li(1979).Phylogenetic reconstruction method,UPGMA,was used to analyze the genetic relationships and the molecular dendrogram was established and revealed:the genetic distance between Salvelinus taxa and Salmo salar is 12.23% and that between N.taihuensis Chen and Salvelinus taxa-S.salar is 21.36%.Thisc indicates that Salangidae diverged from Salmoninae earlier.

比较了鲑形目3种鱼的线粒体DNA物理图谱，根据限制性位点差异法计算它们之间的遗传距离，利用UPGMA聚类分析法构建分子聚类图，结果表明：红点鲑属与大西洋鲑先聚在一起，再与太湖新银鱼相聚，前两者间遗传距离为12.33%，亲缘关系较近，太湖新银鱼与这两者间的遗传距离为21.36%，亲缘关系较远，表明银鱼科与鲑科分离较早。

Results The molecular relative mass of immunocytokine, IP10-scFv is 41.1 kD, affinity constant of IP10-scFv is 2.28×10^-8 with Scatchard formula.

结果重组免疫细胞因子（IP10-scFv）真核表达产物的相对分子质量约为41.1 10^3，纯化后的蛋白浓度为68mg／L，抗体亲和常数（KDIP10-scFv）为2.28 10^-8mol／L。

In the third chapter, eight new complexes of 4, 6-dimethylpyrimidine 2-thioacetic acid with rare earth metals has been synthesized and characterized by means of elemental analysis, molar conductivity, IR,〓 NMR and TG-DTA. The general formula of the complexes is Ln〓(n=4 or 5). In the complexes, the deprotonated ligand coordinated to the rare earth metal ions in chelate bidentate mode. 4 or 5 molecular of crystal water existed in the complexes.

第三章合成了八种4，6-二甲基嘧啶-2-硫代乙酸的稀土配合物，通过元素分析、摩尔电导、红外光谱、核磁共振氢谱和热重-差热对配合物进行了表征，研究结果表明，配合物的组成为Ln〓n=4或5），在配合物中配体羧基脱去质子后采用螯合双齿的方式与稀土离子形成配位键，同时，配合物中含有4或5个结晶水。

The average structural parameters of the coal-tar-pitch ,solvent oil and modified road binder were calculated by Brown-Lander formula using NMR, ultimate analysis and average molecular weight.

利用核磁共振、元素分析、分子量测定等手段，计算得到了煤沥青、溶剂油以及改质筑路油等的平均结构参数。

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。