查询词典 aromatic compound

Aromatic.Term applied to wine with a very proouced aroma,usually made from grapes wieh aromatic flavour and aroma such as the Muscats.

果香的：用于描述蕴含着级显著果香的葡萄酒，这些葡萄通常是以果香浓郁的葡萄如各种玫瑰香型的葡萄酿制。

The main aromatic production technologies are reviewed which included catalytic reforming, aromatic extraction, toluene disproportionation and transalkylation process, isomerization of xylenes and separation of PX.

分析了近年来国内外聚酯和对二甲苯的供需状况及未来需求发展趋势；介绍了当前芳烃主要生产技术，包括催化重整、芳烃抽提、甲苯歧化与烷基转移、二甲苯异构化和二甲苯分离等；指出了扩大芳烃原料来源、通过催化剂的改进提高甲苯歧化过程的对二甲苯选择性、提高C9及以上重芳烃处理能力、提高乙苯转化率等将是未来芳烃技术的主要发展方向。

The product chorismate of this pathway is precursor to the synthesis of the aromatic amino acids phenylalanine,tyrosine,and tryptophan as well as other essential aromatic secondary metabolites such as ubiquinone,menaquinone and vitamin K.

芳香族氨基酸苯丙氨酸、酪氨酸、色氨酸和其它一些必需代谢物如泛醌、维生素K2类、维生素K的起始物是莽草酸途径所产生的分枝酸。

The novel long carbon chain fused ring semi-aromatic nylon PA12N takes the long carbon chain aliphatic diamine 1, 12-twelve carbon diamine and fused ring aromatic serials dibasic acid 2,6-naphthalenedicarboxylic acid as raw materials and is made by the processes of salifying, prepolymerizing and polymerizing after solid phase.

它以长碳链的脂肪族二元胺1，12-十二碳二元胺和稠环芳香族二元酸2，6-萘二甲酸为原料，经过成盐、预聚合、固相后聚合制得。

In model of aromatic amino acids and the simple peptides with aromatic amino acid, intramolecular electron transfer was studied almost with pulse radiolysis technique.

含芳香氨基酸残基的简单肽和蛋白质模型中，研究分子内肽链电子转移一般采用脉冲辐解的研究方法。

The selective chlorination reaction of the aromatic ring among the aromatic compounds is very important in the economy and environmental protection aspects.

芳香族化合物的芳环选择性氯代，在经济和环保上都是一个重要的课题。

Employing high-dilute method and 5-fold excess amine prepared two new "two-armed" acyclic diamine intermediates I_a and I_b, which are also intermediates of synthesizing microcyclic compounds, and eight aromatic Schiff bases, II_, were synthesized from reaction of I_a or I_b condensing with different aromatic aldehydes. Their composition and structure were characterized by Elemental analysis, IR, UV-Vis, LIF,~1HNMR and MS. The hydrogen bond interactions and MS fragmental patterns were also discussed.3. Several novel transition metal complexes using II_a as ligand were synthesized and identified by Elemental analysis, IR, UV-Vis,~1HNMR and molar conductivity.

1，采用高度稀释及胺过量五倍的方法合成了两个具有吡啶双酰胺臂的非环二胺Ⅰ_a和Ⅰ_b，并以它们为中间体进一步合成了八个芳香席夫碱Ⅱ_a-Ⅱ_h，通过元素分析及各种波谱测试鉴定了它们的组成与结构，对化合物的UV-Vis、LIF、IR、~1HNMR及MS进行了较为详细的讨论，还探讨了席夫碱的氢键相互作用及质谱裂解方式； 2，以席夫碱Ⅱ_a为配体合成了几个新型的过渡金属配合物，并通过元素分析、UV-Vis、IR、~1HNMR、摩尔电导及DTA—TG对其进行了表征，讨论了化合物的配位情况及配体在配位中的脱质子行为。

The results indicate the mutual effect exists between the single coals, which could increase the maximum of thermal weight loss obviously and has a small effect on the temperature extent of the weight loss. The main pyrolysis production of coal is coke, but the main production of waste plastics is tar; the yield of water became decrease and the gas became increase by adding the waste plastics. And the CRI and CSR decreased with the ratio of waste plastics in coal. The main ingredients of tar from blend coal are aromatic hydrocarbon and alkane, while those of waste plastics are alkane and alkene. The result of co-coking with coal and waste plastics make the light tar and the aromatic hydrocarbon increase obviously. The combustible ingredient(CO、H2、CH4) of gas from co-coking with coal increase at different ratio; Co-coking with coal and waste plastics could increase the combustible ingredient and thermal value of gas.

结果表明，废塑料与煤混合物在煤的塑性温度区间内存在明显的相互作用，使最大热解失重峰迁移，热解速率变大，且随着废塑料配比的增加呈现规律性的变化；煤热解产物固体焦炭为主，而废塑料的热解产物以焦油为主，废塑料的添加使得总体焦炭和水产率下降，焦炉煤气和焦油的产率增加，即共焦化呈现出明显的&增油减水&效应；随着塑料添加量的增加，焦炭热强度呈现劣化趋势；废塑料代替瘦煤配煤炼焦可使其比例提高到3%而不影响焦炭的质量；纯煤焦化所得焦油以芳香烃类和烷烃类为主，而废塑料热解焦油以烷烃和烯烃为主；废塑料配煤炼焦，可使得的焦油呈现&环构化&和&轻质化&趋势；废塑料的添加可使煤气中的可燃组分(CO、H2、CH4)的含量均有不同程度的增加；废塑料配煤炼焦可以优化焦炉煤气的组成，增加煤气中的可燃组分，提高焦炉煤气的热值。

Benzenedi through hexacarboxylic acids occurred in the RICO products prove the presence of polycyclic aromatic structure and can give a sight on the major mode of aromatic condensations in the fraction sample.

降解产物中都检测到了苯二甲酸到苯六甲酸等一系列的苯多酸，表明三个组分中都存在稠环芳香结构。

By defining several localindices which can be easily calculated from these ground-state wavefunctions, we first succeeded in explaining bond lengths, orientation ofelectrophilic aromatic substitution, and local aromaticity of these benzenoidhydrocarbons within the VB theory. Moreover, the energy splittings betweenthe ground state and first excited state are applied to correlate with theiroverall aromatic characters, the results are also in good agreement withrelated predictions from MO theory.

通过定义一些可由基态波函数直接计算的局域指标，首次在VB模型下成功地解释了苯型烃的键长、亲电取代反应的方向及局域芳香性，并用基态与第一激发态的能量差讨论了这些分子的整体芳香性，得到了与分子轨道理论的预测基本平行的结果。

But this is impossible, as long as it is engaging in a market economy, there are risks in any operation.

但是，这是不可能的，只要是搞市场经济，是有风险的任何行动。

We're on the same wavelength.

我们是同道中人。