指出,共振核—CF 2—的化学位移不仅受第一、二邻位基团的影响,也受第三邻位的影响。
These results indicated that the chemical shifts of central -cf2 - group are not only affected by the first and the second neighboring groups, but also by the third neighboring group.
由于此物质中CF 3具有强吸电子能力,所以其邻位的氯更易被取代,这就说明此反应理论上是能够发生的。
Due to the strong electron-withdrawing property of CF3 - group the substitution of ortho-chloro shows a higher probability, implying the in-principle feasibility of the reaction.
氯被引入苯胺的邻位。
当我们大四的舞会拉开序幕后,我高兴地发现,自己有机会去和邻城的一位男生约会了。在连续举办几个夜晚的舞会上,我们互相邀请着前往。
W hen my senior prom rolled around, I found myself in the happy position of dating a boy from a neighboring town; we invited each other to our proms, which were on consecutive nights.
坐在邻桌的一位男士无意间听到了WHEN和IF的谈话。
The man at the next table couldn't help overhearing WHEN and IF.
苯酚的生物降解受多组分的降解基因控制,形成邻位和间位等不同的代谢途径。
Phenol biodegradation is controlled by multi component genes to form different catabolic pathways of meta position and ortho position.
随着反应时间的延长,有羟基邻位和对位双硝基化以及羟基两个邻位双硝基化产物生成。
Dinitrations occurred at two ortho-positions or both ortho- and para-positions to the hydroxy group with longer reaction time than mononitration.
阿拉斯加和夏威夷是最近加入美国的两个新州。阿拉斯加在加拿大的西北部,夏威夷位邻中太平洋。
Alaska and Hawaii are the two newest states in American. Alaska northwestern lies in Canada, and Hawaii lies in the central Pacific.
阿拉斯加和夏威夷是最近加入美国的两个新州。阿拉斯加在加拿大的西北部,夏威夷位邻中太平洋。
Alaska and Hawaii are the two newest states in America. Alaska lies in the northwestern Canada, and Hawaii lies in the central Pacific.
阿拉斯加和夏威夷是最近加入美国的两个新州。阿拉斯加在加拿大的西北部,夏威夷位邻中太平洋。
Alaska and Hawaii are the two newest states in American. Alaska northwestern Canada, and Hawaii lies in the central Pacific.
研究表明,棓酰类多元酚可与铝形成络合物,其络合物是铝和棓酰基中苯三酚的邻位二羟基形成的,它是稳定的五员螯合环结构;
It is show that the complexes of galloyl type hydrolysable tannins with aluminum are formed which involve five-member ring stably formed adjacent hydroxyl groups in galloyl to aluminum atoms.
在地籍测量和房地产测量中,界址点的点位精度至关重要,其直接影响宗地的面积及其四邻的位置关系。
In the survey of cadastre and real estate, it is very important for position precision of boundary point because it directly influences parcel area and position relationship around it.
方法:将邻指指动脉侧方皮瓣带蒂转位修复创面,以皮瓣血管游离端同患指远端指节的指动脉端端吻合重建患指血运。
Methods:The pedicle vascular digital flap was harvested and its distal end was anastomosed with the distal digital artery of recipient finger to repair the defect and restore the distal blood supply.
结果表明,苯胺的氨基邻位上引入氯后,单体的电化学聚合速率显著下降,形成的聚合物更易水解。
After chlorine is introduced into the ortho-position of aniline, the polymerization rate of the monomer decreases markedly, the formed polymer is hydrolyzed easily.
在硝基邻位上存在的氢键给体如胺基,酚基时,总与硝基形成分子内氢键。
Donors such as amine and phenolic groups, when positioned ortho to a nitro group, are always involved in intramolecular hydrogen bonding.
邻位-取代的苯甲酰基胍,其制备方法,作为药物或诊断剂的应用及含它们的药物。
Ortho-substd. benzoyl guanidines, their preparing process and use as medicine and diagnostic reagent, and medicine contg. same.
对于双取代络合物ma4b2,其平面排列有三个异构体,常见的为有机化学中的邻位、间位和对位排列。
FOR a disubstituted complex, MA4B2, the planar arrangement gives three isomers, the familiar ortho, meta, and para arrangements of organic chemistry.
迄今为止的研究报道表明,对氯苯胺的生物降解只能以邻位途径或修饰邻位途径进行。
Up to date, p-chloroaniline was reported to be biodegraded only through ortho-or modified ortho-cleavage pathway.
由邻位化合物生成的五元环络合物比由间位化合物形成的六元环络合物稳定性高,反应速度快。
The ortho-compound formed penta cyclic compound was more stable that the meta-compound formed hexa cyclic compound, so the reaction rate of the ortho-compound is larger.
老王便向家里最要好的朋友——一位富邻借钱。
Wang applied to the family's dearest friend, a rich neighbor, for a loan.
讨论了高邻位酚醛树脂合成及其它助剂对减震胶性能的影响。
In this paper, the synthetic method of high-ortho resol resin and influence of other chemicals ingredients on the adhesive was discussed.
采用我国海南岛产腰果油制得的槚如果酚合成了高邻位热固性酚醛树脂,并对所合成的树脂的结均、固化条件、固化后树脂的性能进行了分析。
The paper analyses the structure, curing conditions and the properties of the cardanol resol which can be made from cashew nut oil produced in Hainan Island.
发现了一种简便制备邻位含吸电子取代基的膦酰基杂环化合物的方法。
A simple method of preparation of phosphonic heterocyclic compounds has been found.
SketchUp模型定稿,然后肯普返回PS图象处理软件为客户创造一个可交付的邻位和最后的插图。
The Sketchup model is finalized and then Kemp returns to Photoshop to create a deliverable ortho and final illustration for a client.
本实验研究了一系列N-邻位取代苯基马来酰亚胺的合成。
In this study we synthesized a series of N-(o-substituted phenyl) maleimides.
邻位、间位、对位三氟甲基苯酚都是重要的医药、农药和染料中间体。
The o-, m-, p-trifluoromethyl phenol were important intermediates in medicines, pesticides and dyes.
发现该反应在以邻位氟取代的苯睛为底物的情况下,碳-氟键可以被打断并有效地形成碳-碳键。
A C-F cleavage reaction was found when using ortho-fluoro substituted benzonitrile, which resulted in the formation of new C-C bond.
发现该反应在以邻位氟取代的苯睛为底物的情况下,碳-氟键可以被打断并有效地形成碳-碳键。
A C-F cleavage reaction was found when using ortho-fluoro substituted benzonitrile, which resulted in the formation of new C-C bond.
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