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一乙胺

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The method is based on a diazotion-coupling reaction between benzidine and hydrochloric acid naphthyl ethylenediamine in a hydrochloric acid medium.

在酸性条件下,亚硝酸盐与联苯胺重氮化,再与盐酸萘乙二胺偶联生成蓝色产物,该产物在578 nm处有最大吸收值,并由此建立了一种简单、快速、灵敏的亚硝酸盐测定方法。

Preservatives in general are troublesome to crystalline structures and especially disodium EDTA.

一般的防腐剂对水晶结构是有麻烦的,特别是乙二胺四乙基二钠。

An ingestible mollusc poison contains a simple metal compound, an activity enhancing additive such as ethylene diamine disuccinic acid and derivatives thereof, and a carrier material edible to molluscs.

一种可吞食的软体动物毒药,它含有简单金属化合物,增强活性的添加剂诸如乙二胺二琥珀酸及其衍生物,和软体动物可食用的载体材料。

Singing behavior; higher vocal center; caudal nucleus; ventral hyperstriatum; hippocampus; song-control nucleus; song nuclei; area X; melatonin; gamma-aminobutyric acid; glutamic acid decarboxylase; vocal control circuitry; frequency sensitivity; organ of Corti; auditory feedback; neural plasticity; seasonal plasticity; neostriatum; anterior forebrain pathway; lateral magnocellular nucleus; anterior neostriatum; lMAN nucleus; medial nucleus; dorsolateral thalamus; robustus archistriatalis; robust nucleus; archistriatum; song motor control nucleus; vocal motor system; gila cells; nonlinear oscillatory dynamics

歌唱行为;较高级的发声中枢;尾部核;腹侧上纹体;海马;鸣唱控制核团;鸣唱核;X区域;N-乙酰-5-甲氧基色胺;γ-氨基丁酸;谷氨酸脱羧酶;发声控制回路;频率灵敏度;柯替氏器;听觉反应;神经可塑性;季节可塑性;新纹状体;前脑前端路径;侧面大细胞核群;前部新纹状体;lMAN核;内侧核;背外侧丘脑;古纹状体粗核;健康的核;原纹状体;鸣声运动控制核;发声运动系统;毒蜥细胞;非线性振动动力学首页上一页共有 12 条记录,本页从第 11 到第 12 条。

With the in-situ single-stage self-metallization protocol,surface-silvered polyimide film has been prepared using pyromellitic dianhydride/ 4,4\'-oxydianiline-based polyimide as the matrix and (1,1,1-trifluoro-2,4-pentadionato)silveras the silver precursor.

在原位一步自金属化法中,以均苯四甲酸酐/4,4\'-二胺基二苯醚基聚酰亚胺为基体,以三氟乙酰丙酮银作为银的母体制备出了表面金属化的聚酰亚胺银复合薄膜。

A series of polys based on pyromellitic dianhydride, biphenylyl tetracarboxylic dianhydride, thiodiphthalic dianhydride bis benzene dianhydride and oxydiphthalic dianhydride were prepared in different solvents.

以所合成的AB_2单体为原料,合成了一系粘度较低、溶解性良好,带端酚羟基、苯甲酰基、乙酰基、氰代苯基和苯酰苯亚胺基的芳香族超支化聚酰亚胺,通过核磁波谱、红外光谱分析和元素分析对其结构进行确证。

Polyethylene glycol, undecylenic acid, dodecylamine, nanoparticles

聚乙二醇,十一烯酸,十二胺,纳米粒子

N-dodecylethylenediaminetriacetic acid is a new type of chelating surfactants, which were in need of developing non-phorus detergents.

N-十二烷基乙二胺三乙酸是一种新型螯合性表面活性剂,是应无磷洗涤剂的研发要求而问世的。

The amount of Na(superscript +), NH4(superscript +), K(superscript +), Mg(superscript 2+), Ca(superscript 2+), Zn(superscript 2+) in fruits and juice (sports water, green tea , pear juice, carrot juice and carrot and orange juice) were respectively separated and detected by non-suppressed ion chromatography. And pyridine-2, 6-dicarbexylic was used as mobile phase to separated monovalent cations and pyridine-2, 6-dicarbexylic-ethylenedi-amine-oxalic acid was used as mobile phase to separated divalent cations.

采用非抑制型离子色谱法测定了水果以及饮料(运动型饮料、绿茶、水蜜桃汁、胡萝卜汁和胡萝卜橙汁)中Na、NH4、K、Mg(上标 2+)、Ca(上标 2+)、Zn(上标 2+)的含量,其中一价阳离子以吡啶-2,6-二羧酸为淋洗液测定,二价阳离子以吡啶-2,6-二羧酸+乙二胺+草酸为淋洗液测定。

The amount of Na+, NH4+, K+, Mg2+, Ca2+, Zn2+ in fruits and juice (sports water, green tea , pear juice, carrot juice and carrot and orange juice) were respectively separated and detected by non-suppressed ion chromatography.

采用非抑制型离子色谱法测定了水果以及饮料(运动型饮料、绿茶、水蜜桃汁、胡萝卜汁和胡萝卜橙汁)中Na+、NH4+、K+、Mg2+、Ca2+、Zn2+的含量,其中一价阳离子以吡啶-2,6-二羧酸为淋洗液测定,二价阳离子以吡啶-2,6-二羧酸+乙二胺+草酸为淋洗液测定。

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I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里,举止就文雅一些,因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计,这件高贵的制服是香港本土制造,是我们第一套不配帽子的制服。

Do not 'inflate' your achievements and/or qualifications or skills .

不要 '夸大' 你的业绩或成果,条件或者技能。