查询词典 Primary

A new method based on fluorescence enhancement was designed for determination of primary amine.

摘 要：设计一种基于荧光增强原理检测伯胺的新方法。

Through primary analysis on the characteristics of ammonifiers growth and function, ammonification is a possibly important origin of ammonia in Suzhou Creek water body. The studies tested that adding K2HPO4 can reduce ammonifiers function. It maybe has important reference value for ecosystem resume in Suzhou Creek.

通过对苏州河氨化菌的生长特性和功能活性的初步分析，氨化作用可能是氨氮的重要来源之一，研究还表明，添加磷酸氢二钾可以降低苏州河氨化菌的转氨活性，原理尚不清楚，对苏州河的生态恢复可能具有重要的参考价值。

This primary conversion of urea to unstable ammonium carbonate occurs very quickly near the soil surface The following equation illustrates the process

尿素主要在土表转化成不稳定的碳酸铵，转化速率很快，可用以下反应式表示

A novel synthetic approach of 3,3'-azobis(6-amino-1,2,4,5-tetrazine) was firstly devised. Taking 3,6-bis(3,5-dimethylpyrazol-1-yl)-1,2,4,5-tetrazine as a primary material, DAAT was synthesized by high pressure ammonolysis and potassium permanganate oxidation. Compared with the four-step reaction in the literature, this new approach was reduced to two steps with a yield of 58.1%. The intermediate and DAAT were characterized by elemental analysis, IR and NMR spectra.

自行设计了3，3'-偶氮双(6-氨基-1，2，4，5-四嗪)新合成路线、采用3，5-双(3，5-二甲基吡唑-1-基)-1，2，4，5-四嗪为原料，由文献报道的4步反应缩减为2步，经高压氨解、高锰酸钾氧化合成了DAAT，总收率大幅提高，达到58.1%，并采用元素分析、红外光谱、核磁共振光谱等进行了结构表征。

Traffic is the primary indicators measuring amphibious life.

交通是衡量两栖生活的首要指标。

The geology of the Piedmont includes schist, amphibolite, gneiss, migmatite, and granite while the primary resource of the Coastal Plain is kaolin.

地质的皮埃蒙特包括片岩，角闪岩，片麻岩，混合岩和花岗岩的主要资源的海岸平原的高岭土。

There are 4 types of the pore texture for volcanic reservoir: primary vesicle—— fissure type, amygdule——fissure type, solution porosity——fissure type, and phynocryst-matrix solution porosity——fissure type.

火山岩储集的孔隙结构有4种类型，即：原生气孔——裂缝型、杏仁体内孔——裂缝型、溶蚀孔——裂缝型、斑晶溶孔——基质溶孔——裂缝型。

The oxydation products of some of the secondary alcohols was shown to be ketones. The conjugation of three tertiary alcohols, butyl, amyl and hexyl, was higher than that of the corresponding primary and secondary alcohols.

某些二级乙醇氧化产物表明是酮。3种三位乙醇的接合，丁基，戊基和已基，比对应初级和二级乙醇更高。

Methods Clinical features of 25 patients with primary systemic amyloidosis admitted to our hospital since 1991 were retrospectively analyzed.

回顾性分析了本院1991年以来收治的25例原发性系统性淀粉样变性患者的临床特征。

Methods: Retrospective study of 49 patients with confirmed primary amyloidosis and ischemic stroke.

回顾性研究已经经过确诊的原发性全身性淀粉样变性和缺血性卒中的49例病例。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。