查询词典 three-four time

Our country ethylene diamine mainly uses in producing the agricultural chemicals (woods manganese zinc, dithane Z-78, generation of woods amine and pesticide, weed killer, disinfectant), the surface active agent (lives geminate stearic acid amide, alkyl imidazole lin, double amide, with oxirane, epoxypropane synthesizes non-ionic surface active agent), the epoxy resin firming agent (polyamide resins, epoxy firming agent, hydroxyethyl ethylene diamine and so on), the wash assistant (ethylene diamine four ethanoic acid and sodium salt series chelating agents), medicine raw material (aminophylline, washes must be peaceful, nose eye only, deinsectization spirit and so on), water treatment medicinal preparation (ethylene diamine four methylene phosphonates, second grade trunk base ethylidene two phosphine acids), corrosion inhibitor dye fixing agent, photography materialFixing bath and oil dope and so on.

我国乙二胺主要用于生产农药（森锰锌、代森锌、代森胺及杀虫剂、除草剂、杀菌剂），表面活性剂（生成双硬脂酸酰胺，烷基咪唑啉、双酰胺，与环氧乙烷，环氧丙烷合成非离子表面活性剂），环氧树脂固化剂（聚酰胺树脂，环氧固化剂，羟乙基乙二胺等），洗涤助剂（乙二胺四乙酸及其钠盐系列螯合剂），医药原料（氨茶碱，洗必泰，鼻眼净，灭虫灵等），水处理剂（乙二胺四甲叉膦酸盐，乙脒基乙叉二膦酸），缓蚀剂染料固色剂，照相材料定影液及润滑油添加剂等。

Any object having a shape similar to a plane geometric figure with four equal sides and four right angles.

一个外形近似于平面几何中的正方形的物体，即有四个相同的边和四个直角。

Cephalotaxine ester of 2-oxo-6-methylheptanoic acid was treated with lithium diisopropylamide and Me O-(1-methoxyisopropyl)glycolate to give a mixture of homoisoharringtonine and its stereoisomers with 56% yield. The four stereoisomers separated by TLC showed identical mass spectra and almost superimposed IR but with different 1H NMR spectra. The configuration of the 2'-C and 3'-C of the four isomers were postulated based upon their 1H NMR spectra as compared with the 1H NMR spectra of isoharringtonine and its stereoisomers.

2-氧代-6-甲基庚酰基三尖杉碱(3)与0-(1-甲氧基异丙基)羟基乙酸甲酯(4)在强碱性试剂二异丙胺锂存在下，起亲核加成反应，反应中间体5在室温用酸性丙酮水解，得到一种新的三尖杉酯类生物碱一一高异三尖杉酯碱(6c)及其立体异构体(6a、6b、6d)的混合物，产率56%、通过制备薄层层析分得这四个立体异构体，它们的1H NMR和异三尖杉酯碱及其立体异构体的1H NMR类似，推定了它们的绝对构型。

Graph coloring problem, you can use four kinds of colors to a different places on the map with different colors, and no more than four colors.

详细说明：图的着色问题，可以使用四种颜色给一个地图上的不同地方着上不同的颜色，并且不超过四种颜色。

The Dervise, absolutely persuaded(3) that four men, coming from four several directions, could not all be deceived, verily believed that the grazier who had sold him the sheep was a conjurer, and had bewitched his sight; inasmuch that, no longer giving credit to his Own eyes,(4) he began to be firmly convinced that the sheep he was leading was a dog.

托钵僧因为绝对相信四个来自不同方向的人不可能全都搞错了，就确实认为那个卖这头羊给他的牧人是个魔术师，迷了他的眼，于是，他不再相信自己的眼睛，确信自己所牵着的那头羊是一条狗了。

Part one _ four analyze four characters respectively. These characters are respectively Emily Grierson, the heroine in Faulkner"s most notable fiction "A Rose for Emily, Jones Wash, an elderly poor white, from Absolom !

论文主体由五部分组成，前四部分分别论述四位边缘人物形象，他们是福克纳最著名的短篇小说《献给爱米莉的一朵玫瑰》的主人公爱米莉·格里尔生，长篇小说《押沙龙！

Note that four data wires and an additional signal ground wire are used in a "four-wire" connection.

请注意4线制连接的4条数据线和另外的一条信号地线是一并使用的。

There are four different ecological strategies among marine fishes, we separately chose large yellow croake, small yellow croake, hairtail and anchovy as the representative fishes of four ocean ecological strategies and analyzed their changes of ecological characters under high intensity fishing environment during the last several decades.

分别选取大黄鱼、小黄鱼、带鱼和鳀鱼作为四种海洋生态对策的代表性鱼类，分析了它们在近几十年高捕捞强度环境下生态学性状的变化。

The half-pound package has four sticks of four tablespoons each, which is half the size of a standard stick.

半镑包有四个坚持四个汤匙每个，这是一半大小的一个标准的棒。

Four kinds of hapten with the similar structure of parathion-methyl were designed and synthesized. These four haptens were coupled with different length and structural spacer arms through nitro-group or methoxyphosphate group of parathion-methyl. Then six kinds of hapten-protein conjugates were synthesized by different methods.

根据甲基对硫磷的结构特征，分别从甲基对硫磷的硝基一端或磷酸酯基甲氧基一端引入一定长度的间隔臂和活性基团，设计并合成了 4种结构的半抗原；针对各种半抗原所带活性基团的性质，通过多种方法制备了与不同的载体蛋白偶联的人工抗原。

Apllied the data of QuickBird-2——the highest resolution remote sensing,and based on the theory and methodology of fractal geometry,we have quantitatively studied remote sensing lineations in Gaolong gold deposit of Guangxi.

采用Quick Brid-2高分辨率卫星遥感数据，通过分形几何学的盒计维数法，定量研究广西高龙金矿区遥感线性构造。

So, sometimes, to change the color can not be your food (referring to the above-mentioned crustacean) has been a sign of boiling over.

所以，有时，来改变颜色，不能你的食物一直是沸腾了的迹象。