查询词典 ionic bond

The enzymolytic products identified were:diisopro-pylaminoethanethiol through the breakdown of P-S bond, and its oxidized product, N, N'-dithiodiethylene-bis ; and diisopropyla-minochloroethane through the breakdown of S-C bond.

VS与电鳐乙酰胆碱酯酶作用的主要产物是： P—S键断裂产物二异丙氨基乙硫醇，该化合物在水溶液中不稳定，可进一步氧化为N，N＇-双二异丙氨基乙基二硫醚；S—C键断裂产物二异丙氨基氯乙烷。

Beginning from the viewpoint that corporation bond is a kind ofcredit tool essentia lly, the paper designs the transverse thread by credit lega l system,which is property right foundation, credit service, oneself credit, credit disclosure ofcorporation bond's credit.

因此公司债券契约是其纵向结构的起点。为此，论文首先分析公司债契约以统领该纵向结构，然后依次探讨公司债发行转让、公司债存续期间的公司债管理途径和公司债与公司治理问题。

Thiol groups were good to be used in functionalizing gold nanoparticles, and ester bond formation and breakage played the major role in this research. Thioctic acid and 11-mercapto-1-undecanol were used to functionalize the gold nanoparticles and form ester bond by using the carboxylic acid group on thioctic acid and the hydroxyl group on 11-mercapto-1-undecanol. Concentrated sulfuric acid was used to be the catalyst in this reaction, and sodium hydroxide was added for the proceeding of the reverse reaction.

硫醇官能基在金奈米粒子的修饰有很好的效果，利用带有硫醇官能基之tioctic acid 与11-mercapto-1-undecanol (11-MUDO)分子修饰在金奈米粒子上，并使TA上之羧基和11-MUDO上之羟基脱水生成酯化键，浓硫酸则是反应中的催化剂，而氢氧化钠则可促使系统进行逆反应。

Results showed that during the carbonization of furfuralcohol resin C-O bond rupture of pentacyclic ring, took place firstly, bringine C-H bond rupture.

结果表明：糠醇树脂炭化裂解过程首先是五员杂环内的碳氧键发生断裂，引起碳氢键断裂。

Galactosidase can hydrolysis a -galactosis bond , namely it can hydrolysis galactosis complex of non-reductive ends binding α-bond, so it can hydrolysis oligosaccharides such as raffinose、 stachyose、 verbascose, et al. It also can hydrolysis heteropolysaccharide including α-galactosis bonds.

能催化α-半乳糖苷键的水解，即能水解非还原性末端以α键结合的半乳糖苷化合物，因此它能水解蜜二糖、棉子糖、水苏糖和毛蕊花糖等低聚糖，还能水解含有α-半乳糖苷键的杂多糖。

In two different models the bonding strength has no significant difference between Gluma comfort bond and Single bond.

Gluma comfort bond和Single bond分别在两种建模方式下进行比较，两种粘结剂粘结强度的差异无显著性意义。

Methods Twenty-four extracted teeth block were bonded with Ni-Cr alloy and 24 resin block were bonded with Ni-Cr alloy by two kinds of adhesive material. Those were Gluma comfort bond and Single bond. Those bonding complexes were stored in normal saline solution for 72 hours.

用两种通用型粘结剂（G1uma comfort bond与Single bond）分别将24颗离体牙试块与Ni-Cr合金粘结，24个树脂试块与Ni-Cr合金粘结，生理盐水中储存72h后分别测量抗拉伸强度和抗剪切强度。

Therefore, bond graphis a model method based on energy conservation and signal casual analyses. This paperintroduces the basic principle of bond graph and its study trend. The application of bondgraph in thermal system is presented emphatically through deducing model of boilerfeedwater pump system and its simulation.

文中首先介绍了键合图方法的基本原理及国内外发展状况，指出它是对工程系统进行动态分析的一种新方法，然后通过锅炉给水泵系统的键合图模型及仿真的介绍，指出键合图理论在热工领域具有较好的应用前景。

The results showed that though apoHb could be reconstituted with all FePs, it showed different functions. Binding of apoHb with hemin can enhance the heterolytic cleavage of O-O bond of H〓O〓, but inhibiting the cleavage when FeTCPP and FeTPPS〓 were used instead of hemin. The binding of apoHb with FeTTMAPP showed negligible influence on the cleavage of O-O bond in H〓O〓.

结果表明，虽然具有阴离子基团的FeTCPP和FeTPPS〓能够在天然血红蛋白中辅基位置的附近与脱辅基血红蛋白结合，但是由于结构上与天然辅基的差别，使得血红素蛋白中相应的氨基酸残基不能起到有效的作用，因此不但不能提高反而抑制了其过氧化物酶活性；而对于具有阳离子基团的FeTTMAPP，脱辅基血红蛋白对其活性没有明显的影响。

The results indicate that the heteronuclear bond energies are greater than homonuclear bond energies.

用示差扫描量计、X光衍射以及透射电镜研究了非晶铝合金的晶化行为，结果表明，非晶铝合金的晶化经历了初晶型晶化和剩余非晶的多重型晶化，整个晶化过程可相应地分为第一和第二晶化阶段。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

Talk Undelete failed; someone else may have undeleted the page first.

Talk 无法删除选定的页面或图像（它可能已经被其他人删除了）。