斯普伦特·达布维多取代了他。
报道了通过串联环加成芳构化反应合成多取代芳族化合物的方法。
The synthesis of polysubstituted aromatic compounds by using a tandem cycloaddition aromatization reaction was reported.
亲核性芳香取代。多取代苯衍生物合成的策略。
Nucleophilic Aromatic Substitution. Strategies in the Synthesis of Multisubstituted Benzene Derivatives.
本文报道用环加成-芳构化串连反应制备多取代芳香族化合物的方法。
The synthesis of polysubstituted aromatic compounds by using tandem cycloaddition aromatization reaction was reported.
这种合成策略还可以通过控制炔酸酯这类底物来构筑多取代的对称吡咯衍生物和非对称吡咯衍生物。
Besides, this strategy provides an alternative way to construct symmetric and asymmetric polysubstituted pyrrole derivatives via controlling the starting materials of alkynoates.
本论文是关于共轭烯炔酮与硝酮化合物反应生成多取代的呋喃化合物的研究，主要从三个方面进行了研究。
In this thesis, we have focused on the synthesis of highly substituted furan by the cycloaddition reaction of conjugated enynones with nitrones.
在甲醇和水的混合体系中，通过芳醛，丙二腈和脂肪胺的三组分反应我们顺利得到了一系列多取代的吡啶和1，4-二氢吡啶衍生物。
Polysubstituted pyridines and 1,4-dihydropyridines were prepared in a three-component reaction of aromatic aldehyde, malononitrile and aliphatic amine in a mixed solvent of methanol and water.
这种产品看起来会很快取代多焦点人工晶体。
以单剂量瓶取代多剂量瓶
必须将以单剂瓶取代所有多剂量瓶的环境成本考虑在内。
The environmental cost of replacing all multi-dose vials with single-dose vials must be taken into consideration.
这向我们发出了真正的预警信号：如何不能切实有力地遏制耐多药结核病，它会随时取代目前造成全球95%的结核病例的主要药物敏感菌株。
This is the true warning signal: if MDR-TB is not vigorously addressed, it stands to replace the mainly drug-susceptible strains currently responsible for 95% of the world's TB cases.
用多叶箔片轴承取代火箭发动机涡轮泵上的滚珠轴承具有工作寿命长、工作转速高、能量损失小等重要优点。
Multileaf foil bearing, instead of ball bearing of turbo-pump in rocket engine, has many important advantages including long life, high speed and low energy loss.
这种多频激光器（MBL）将取代现有的红外干扰激光器和闪光灯子系统，以保护直升机免受红外制导导弹的威胁。
The multiband laser (MBL) replaces an existing infrared jam laser and flash lamp subsystem to protect helicopters by defeating infrared-seeking missiles.
该方案采用旋压翻边取代拉深，实现了多楔轮侧壁的单独增厚；
The new process used spinning flanging replace drawing to achieve multi-V pulley side wall separate thickening;
如果多剂量瓶被单剂量瓶取代，还将带来环境代价。
There would also be environmental costs if all multi-dose vials were replaced with single-dose vials.
高速公路多已取代了普通公路。
Motorways have largely superseded ordinary roads for long-distance travel.
新的find可能使用加号(+)取代分号(；)作为分隔符，这允许find在一次调用命令时传递尽可能多的名称，类似于xargs。
Modern versions of find may be delimited with a + sign instead of a semi-colon, and this causes find to pass as many names as possible in one invocation of a command, similar to the way xargs works.
引进技术以削减烧煤排出的二氧化碳，或以较清洁能源取代煤炭，二者均很昂贵，故问题是中国能在多短时间内达成上述目标。
So the question is how fast China can introduce technologies to reduce carbon emissions from coal-burning, or else replace coal with cleaner forms of energy, both of which will be expensive.
研究者们目前正为此而努力，同时他们也在探索其他可取代聚乙二醇的多聚体，以便更好地控制细胞的排列结构。
The researchers are now doing that, and they are also exploring the use of different polymers that could replace PEG and offer more control over cell placement.
该仪表可取代多块指针仪表，完成相同功能。
The instrument can replace the multi-block pointer meters to complete the same functions.
多食用各种海鲜，用海鲜取代一些肉和家禽。
Increase the amount and variety of seafood consumed by choosing seafood in place of some meat and poultry.
多囊性发育不良肾也称为多囊肾发育不良，切开发现，大小不等的囊肿取代了肾实质。
A multicystic dysplastic kidney (also known as cystic renal dysplasia) has been sectioned to reveal the variably sized cysts that replace the renal parenchyma.
以茶碱为原料经取代、氧化和缩合反应制备多索茶碱；其结构为IR及MS所证实。
Doxofylline was synthesized from theophylline by substitution, oxidation and condensation. The structure has been proven by IR and MS.
比较发现，茂环上的取代基越大越有利于二茂铁基阳离子与多阴离子之比小的电荷转移盐的形成。
The experiments show that large substituent group on Cp is favorable to the formation of CTSs with low ratio of ferrocenyl:POM.
大多健身专家还建议用少食多餐来取代三大餐。
Most fitness experts recommend eating multiple small meals rather than three larger ones.
我希望参加尽可能多的比赛，因为我需要争取代表波兰国家队出战欧洲杯。
I want to play as many games as possible, because I am also hoping to fight for a place in the Polish national side for the European Championships.
随着多元化信息时代的到来，服装产品的大批量，少品种，无个性的状况正在被小批量、多品种、具有鲜明个性的状况所取代。
With the coming of diversity information era, clothing products have been changed from large batches, few species to small batches, more species and bright individuality.
这个系列的酒显示出突显波尔多特色的新鲜与优雅，取代了高集中度与十足的橡木气息。
Rather than highly concerned and okay wines, they tend to reveal the freshness and the elegance that characterize great Bordeaux.
应用推荐