urea是什么意思

网络释义

用法例句

Synthesis and biological activity of N-[5-(3-pyridyl)-1,3,4-thiadiazol-2-yl]-N′-(substituted phenyl)ureas;

N-[5-(3-吡啶基)-1,3,4-噻二唑-2-基]-N′-取代苯基脲的合成及生物活性

Synthesis of Urea and Thiourea Derivatives Bearing Mercaptotetrazole;

含巯基四唑环的芳基(硫)脲及其衍生物的合成

Synthesis and biological activity of N-{5-[1-(o-chlorophenoxy)ethyl]1,3,4-thiadiazol-2-yl}-N'-(substituted phenyl)ureas;

N-{5-[1-(邻氯苯氧)乙基]-1,3,4-噻二唑-2-基}-N’-取代苯基脲的合成及生物活性

Study on the rheological behavior of cellulose/NaOH-urea-thiourea solution system;

纤维素/NaOH-尿素-硫脲溶液体系流变性能的研究

The Impact of Leaching Gold of Thiourea about Time,C_(H_2SO_4) and C_(Fe~(3+));

浸出时间、H_2SO_4和Fe~(3+)浓度对硫脲浸金的影响

Studies on the Weak Interaction and Supramolecular Structure in the Crystal of N-Ethoxycarbonyl-N'-Arylthiourea;

N-乙氧羰基-N'-取代芳基硫脲晶体中的弱相互作用及超分子结构研究

Synthesis of glycoluril and its application in hydrophilic coatings;

甘脲的合成及其在水性涂料中的应用

The synthesis of some new substituted glycolurils;

合成瓜环的中间体—新型甘脲的合成

Preparation and properties of Fe_3O_4 polyurea microcapsules;

Fe_3O_4聚脲微胶囊的制备及性能

Study on the Synthesis and Characterization of Aromatic/Aliphatic Co-polyureas;

芳香/脂肪族聚脲的合成与表征

Preparation of polyamide-polyurea macrocapsule and its release behaviour;

聚酰胺-聚脲大胶囊的制备及其缓释性能的研究

Distribution characteristic of urease activity in subsurface constructed wetlands;

潜流型人工湿地的脲酶活性分布特性

Effects of several elements on urease activity in Liaodong bay wetland;

几种元素污染对辽东湾湿地脲酶活性的影响

Effects of soil Pb pollution on growth of Brassica chinensis and Ipomoea aquatica and urease activities.;

土壤铅污染对青菜和蕹菜生长及脲酶活性的影响

Study on extraction of gold from tinylimonite ore containing small amount of gold by using thiocarbamide as extractant;

贫细微含金褐铁矿石硫脲法浸金研究

Eight novel N,N′-naphthalene acyl substituted aromatic acylamino thiocarbamides(Ⅱ1~Ⅱ8) were synthesized from aryl acylhydrazine(Ⅰ) and α-naphthalene acyl isothiocyanate, which was obtained by the reaction of potassium thiocyanate with α-naphthalene acyl chloride obtained from 2-naphthylacetic acid and thionyl chloride in anhydrous benzene.

通过α-萘乙酸和SOCl2在无水苯中反应制得α-萘乙酰氯,与硫氰酸钾反应生成α-萘乙酰基异硫氰酸酯,再与芳基酰肼进行加成反应,合成8种新型N,N′-萘乙酰基取代芳乙酰胺基硫脲类化合物(Ⅱ1～Ⅱ8)。

A novel compound——N-naphthalene acylN′-substituted p-chlorobenzamido thiocarbamide was synthesized by reaction of p-chlorobenzamido hydrazine and α-naphthalene acyl mustard oil,which was obtained by potassium thiocyanate combined with α-naphthalene acyl chloride formed from α-naphthylacetic acid and SOCl2 in anhydrous benzene.

通过α-萘乙酸和SOCl2在无水苯中反应制得α-萘乙酰氯,然后与硫氰酸钾反应生成α-萘乙酰基异硫氰酸酯,再与对氯苯甲酰肼进行加成反应,合成了新型化合物N-萘乙酰基-N′-对氯苯甲酰氨基硫脲,用薄层色谱法跟踪最后一步反应,确定了反应时间。

Comparative Analysis on Clinical Significance and Serover-Specific Identification of Ureaplasma Urealyticum on the Basis of DNA Sequence of N Terminal of MBA;

利用解脲脲原体MBA基因对解脲脲原体分型并比较分析其临床意义

bis-methoxymethyl urea

双甲氧甲基脲,双甲醚[基] 脲(防皱缩理剂)

Green Synthesis and Study of the Aroylthioureas and Thioacylsemicarbazides;

酰基硫脲、酰氨基硫脲的绿色合成研究

Analysis on Antibiotic Resistance of Urerplasma urealyticum in 207 Patients with Urethritis

207例尿道炎患者解脲脲原体药敏分析

water soluble urea resin coating

水溶性脲醛树脂涂料

uramildiacetic acid 2-

氨基丙二酰脲二乙酸

dinitrobenzoylene urea

二硝基邻苯甲酰亚脲

hylol ethylene urea resin

二羟甲基乙烯脲树脂

Chemical reagent-Urea

GB/T696-1994化学试剂脲(尿素)

urea melamine formaldehyde resin

三聚氰胺脲甲醛树脂

methylated methylol urea resin

甲醚化羟甲基脲树脂

dimethylol hydroxy propylene urea

二羟甲基羟基丙撑脲

DMDHEU (dimethylol dihydroxy-ethylene urea)

二羟甲基二羟基乙撑脲

ether-type dimethylol urea

醚型二羟甲基脲，醚化二羟甲基脲（防皱整理剂）

The Relationship between Ureaplasma Urealyticum Infection in the Genital Tract and Semen Quality;

生殖道溶脲脲原体感染与精液质量关系的研究

Synthesis of Unsymmetrical Ureas and Semicarbazides under Microwave Irradiation;

微波辐射下不对称脲、氨基脲的合成研究

Studies on pyridylureas and cyclic ureas by the selenium-catalyzed carbonylation;

硒催化羰基化合成吡啶脲及环脲的研究

Green Synthesis and Study of the Aroyl Urea and Thiourea;

芳酰基脲及硫脲类化合物的绿色合成与研究