环

基本解释 (translations)

annulation  ·  annulus  ·  link  ·  loop  ·  ring  ·  tach  ·  loops  ·  annuluses  ·  rings  ·  bd.  ·  cyclos

词组短语

daisy chain

与环相关的网络例句 [注：此内容来源于网络，仅供参考]

The competitive products are Senmao Alicyclic Epoxy Resins CER-170, Reactive Epoxy Flexibilizer CYH-277, and Modified Alicyclic Epoxy Curing Agent WZH-155 Series. These unprecedented hi-tech products satisfy all the demands both at home and abroad, which are widely applied in the fields such as photoelectron, IT digit and UV-resistant electrotechnical casting, outdoors alicyclic coatings, building structural glue and epoxy matrix composites and so on.

公司拥有年产2000吨脂环族环氧树脂和年产5000吨反应型环氧增韧剂及环氧固化剂等生产装置；其主导产品为：森茂牌脂环族环氧树脂CER-170、反应型环氧增韧剂CYH-277、改性脂环胺环氧固化剂WZH-155系列，均为填补国内外空白的高新技术产品；广泛服务于光电子、IT数码产业以及耐紫外线电工浇注、户外环氧涂料、建筑结构胶、环氧复合材料等领域。

The first chapter, main instead " duo-ring " condition of " every maximal left ideal is GW-ideal " condition,study strongly regularities of GP-V-ring on this condition.lt is shown that (1) R is strongly regular iff R is left GP-V-ring whose maximal left ideals are GW-ideal.(2)R is strongly regular iff R is left GP-V-ring whose maximal right ideals are GW-ideal. The second chapter, generalize some results of GP-V-ring to GP-V-ring, discuss regularity of GP-V-ring.It is shown that (1) R is left self-injective regular with non-zero socle iff R is left GP-V -ring with Soc = Soc and R contains an injective maximal left ideal.(2)R is regular ring and every maximal essential left ideal is ideal iff R is left GP-injective left GP-V -ring and every maximal essential left ideal is ideal.

第一章主要将"duo-环"条件替换成"每一极大左理想是GW-理想"条件，研究在此条件下，GP-V-环的强正则性，证明了：(1)R是强正则环当且仅当R是左GP-V-环且R的每一极大左理想是广义弱理想；(2)R是强正则环当且仅当R是左GP-V-环且R的每一极大右理想是广义弱理想，第二章，主要将GP-V-环上一些结果推广到GP-V′-环上，讨论GP-V′-环的正则性，证明了：(1)R是左自内射正则环且Soc≠0当且仅当R是包含内射极大左理想的GP-V′-环，且Soc=Soc；(2)R是正则环且每一极大本质左理想是理想当且仅当R是左GP-内射的左GP-V′-环且每一极大本质左理想是理想。

The influence of environmental variables on distribution of PAHs(1) The concentrations of PAHs were higher in warm temperate zone and subtropical zonethan in low temperature zone;(2) The concentration in plain, hilly land and Ya\'an mountainousregion were higher than in other places;(3) The concentration in paddy fields, dry land andforests were higher than in artificial land and grass;(4) There was positive correlation betweenthe concentration of PAHs and TOC. The correlation was more obvious for 4-rings PAHs thanfor 5-, 6-rings PAHs;(5) The concentration of PAHs in acid soils was higher than in alkali andneutral soils;(6) The concentrations in conifer and spinney forest were higher than inbroad-leaved forest.Part two: The temporal and spatial distribution characteristics of POPs at Basin-MountainTransect.

环境因素对多环芳烃分布的影响(1)温带和亚热带地区土壤多环芳烃含量高于低温地区土壤中多环芳烃含量；(2)在平原、匠陵和雅安市附近的山区多环芳烃含量高于其他地区含量：(3)水田、旱地和林地多环芳烃含量高于建筑用地和草地中含量；(4)多环芳烃含量和土壤总有机碳含量成正比，四环多环芳烃与总有机碳的相关性高于其他多环芳烃的相关性；(5)酸性土壤中多环芳烃含量高于碱性和中性土壤中含量；(6)针叶林和灌木林多环芳烃含量高于阔叶林中的含量。

Utilized the correlative knowledge of mathematics and theoretical mechanics, the movement measure of the rolling forming of rectangle ring have been studied that based on the ring rolling theory. And the corresponding geometrical models and mathematical models have been established. It was revealed the variation law of ring in the cold rolling process.With the rolling processing, the inside and outside diameters of ring gradually increased with the cures similarly hyperbolic and the augment speed of the inside diameter was obviously larger than the augment speed of the outside diameter. With the rolling processing, the displacement, speed and acceleration of the ring centre gradually increased in the feeding direction in the horizontal and vertical ring rolling mill. With the rolling processing, the moment of inertia which ring reeled its centre and the whirligig of ring gradually increased. It caused the rotary speed gradually decreased. And it was benefit to decrease the circle tolerance and improve the precision of final molding.

本文基于环件轧制理论，运用相关的数学知识和理论力学知识，研究了冷轧过程中矩形截面环件轧制成形的运动测量，并建立相关的几何模型和数学模型，揭示了冷轧过程中环件的变化规律：随着轧制过程的进行，环件的内外径随类似于双曲线的曲线逐渐增大，且环件内径增大速度大于外径增大速度；在卧式轧环机和立式轧环机下，随着轧制过程的进行，环件中心的位移、速度及加速度不断增大；随着轧制过程的进行，环件绕其中心的转动惯量不断增大，导致环件的转速不断减小，这样有利于环件的整圆和最终成形环件的精度。

This dissertation is mainly focused on the reactivity of methylenecyclopropanes and comprises six parts. 1 The reactions of methylenecyclopropanes with phenylsulfenyl chloride, phenylselenyl chloride and diphenyl diselenide; 2 The coupling reactions of the ring-opening products derivated from methylenecyclopropanes; 3 The palladium-catalyzed ring-enlargement of mono-aryl group substituted methylenecyclopropanes to cyclobutenes. 4 The gold-catalyzed domino ring-opening and ring-closing hydroamination of methylenecyclopropanes with sulfonamides; 5 The Lewis acid-catalyzed reactions of mono-aryl group substituted methylenecyclopropanes with diethyl ketomalonate in the presence of water; 6 The iodobenzene diacetate mediated novel 1,3-dipolar cycloaddition of methylenecyclopropanes, vinylidenecyclopropanes, and methylenecyclobutane with phthalhydrazine.

本论文主要研究了亚甲基环丙烷类化合物的一些化学反应性能，共由以下六部分组成：1、亚甲基环丙烷类化合物与苯硫氯、苯硒氯及二苯基二硒的反应；2、亚甲基环丙烷类化合物开环产物的偶联反应；3、单芳基取代的亚甲基环丙烷类化合物在钯催化剂作用下的扩环反应；4、金化合物催化磺酰胺对亚甲基环丙烷类化合物的串联开环关环氨氢化反应；5、路易斯酸催化亚甲基环丙烷类化合物与丙酮二羧酸二乙酯在有水存在下的反应；6、醋酸碘苯促进的亚甲基环丙烷类化合物、亚乙烯基环丙烷类化合物及亚甲基环丁烷类化合物与邻苯二甲酰肼的新型1，3-偶极环加成反应。

The experimental results show that the distributions of content and toxicity equivalent quantity of PAHs in raw coal are similar to coal gasification but this compositions and contents are different. The rise of coal rank leads to the decrease of the content and TEQ of PAHs in raw coal and the increase of TEQ during coal gasification, while the content of PAHs emission from coal gasification increases first and then decreases with the increase of coal rank. The total PAHs contents generated in coal gasification of some sorts of coals are higher than in raw coal. The types of PAHs formed in coal gasification include undecomposed PAHs in raw coal, pyrosysthensis PAHs, and radical polymerization PAHs at high temperature.

试验结果表明：煤气化前后多环芳烃质量分数和毒性当量质量分数的分布特徵相似，但多环芳烃的组成和质量分数不同；煤化程度增加，原煤多环芳烃质量分数和毒性当量质量分数减小，煤气化多环芳烃质量分数先增后减，毒性当量质量分数与煤化程度呈线性关系；部分煤种气化多环芳烃的质量分数高於原煤多环芳烃质量分数，且煤气化多环芳烃的种类分为原煤未分解的多环芳烃、热解合成的多环芳烃、自由基高温缩合生成的多环芳烃。

Structured packing which has wire mesh packing, sheet packing nets, rolling-hole packing, corrugated plate packing, etc.; bulk packing are: Powell ring, ladder ring, Intalox ring, flat ring, conjugate ring, the British park , double convex ring, ring ohm, V-ring, ring 84 inside the arc and so on; experimental filler: Q net ring packing, rolling-hole ring packing, Seater, Central and so on, column has: Tortoise net, float valve, connectors , Nagarze, blister, plate, tray, distribution devices, such as demister.; Products sold throughout the country, exported to Southeast Asia.

其中规整填料有丝网波纹填料、板网波纹填料、压延孔波纹填料、孔板波纹填料等；散装填料有：鲍尔环、阶梯环、矩鞍环、扁环、共轭环、英特帕克、双凸环、欧姆环、V型环、八四内弧环等；实验填料：Q网环填料、压延孔环填料、西特环等，塔内件有：龟甲网、浮阀、连接件、卡子、泡罩、筛板、塔板、分布器、除沫器等。；产品畅销全国，远销东南亚地区。

The effect of the friction between rolls and ring can be ignored and the effect of the spread velocity of rolling on the deformation of ring is illustrated.

通过模拟分析比较，揭示出了环件轧制过程中的金属流动规律：轧制时，环件外侧的变形最大，厚向中心部位变形最小，内侧的变形程度介于中间；环件内外环面的压应力分布和变化规律：在垂直于环件轴线的对称面上，压应力分布近似对称状态，而且在对称面上的应力最大，往端面方向开始减小；指出了环件轧制中轧辊与环件摩擦对环件成形的影响：对于环件的宽展变形，摩擦的影响很小，可以忽略；分析了环件进给速度对环件成形的影响并阐述了环件厚向中心部位凹陷产生的原因，提出防止凹陷的措施：在轧制时，尽量使用快的进给速度有利于防止端面凹陷的产生；研究了导向辊位置对环件成形以及轧辊受力的影响：导向辊的位置对环件的宽展变形影响很小，但对轧辊的受力影响较大，当导向辊的中心位置位于毛坯初始中心位置之上时，驱动辊和芯辊的受力相对较小，这是导向辊导向时优先考虑的位置。

CITY RIDE \ 环法自行车赛 Spain's Alberto Contador, in the overall leader's yellow jersey, rode past the Arc de Triomphe during the 21st stage of the Tour de France in Paris Sunday.

上周日，西班牙车手康塔德身穿黄色领骑衫，在环法自行车赛第21赛段中经过巴黎凯旋门。

Diamond ring effect 钻石环效应 Occurs during a total solar eclipse when only one baily's bead remains, or in practice, when a patch of sunlight can be seen at one side of the disk, resembling a diamond ring (this usually happens before baily's beads appear before totality or after baily's beads are formed after the end of totality).

通常於日全食前倍里珠出现末段和日全食后倍里珠出现前段发生。当只有一粒倍里珠在太阳圆盘时(实务上为光束只在太阳一面可见时)，该圆盘看上去就像环里突出一粒钻石般，因而得名。

与环相关的网络解释 [注：此内容来源于网络，仅供参考]

annulus：环带

孢子囊的细胞壁由单层(薄囊蕨类)或多层(厚囊蕨类)细胞组成,在细胞壁上有不均匀的增厚形成环带(annulus).环带的着生位置有种种形式,如顶生环带、横行中部环带、斜行环带、纵行环带等,这些环带对于孢子的散布有重要作用.

commutative ring：交换环

特别是代数几何与代数数论(交换环)、泛函分析(交换赋范环、算子环与函数环)飞拓扑(拓扑空间上的连续函数环).域论、交换环理沦(见域(阮ld),交换环(commutative ring),亦见交换代数(commutative al罗bra)),

naphthene：环烷环烃

naphthene 环烷n.环烷环烃 | naphthene 环烷环烃 | naphthenebasecrudeoil 环烷基原油

naphthene：环烷n.环烷环烃

naphthene 环烷 | naphthene 环烷n.环烷环烃 | naphthene 环烷环烃

naphthene series：环烷系,(环石蜡族)环烷族

naphthene base lubrication oil 环烷基润滑油 | naphthene series 环烷系,(环石蜡族)环烷族 | naphthene soaps 环烷皂

snap ring：卡环

精和,是止动环,卡环(Snap Ring)的专业制造厂家,多年来致力于止动环卡环的生产和开发. 主要生产IS0464;GB/T305;DIN5417等标准系列的SP;NR;WR;WRE;BR;AR;SB止动环、卡环;以及FMG;MR;SL;TR;等轴承卡簧;电机轴承径向止动环;轴承锁圈等产品.

homocyclic compound：碳环化合物;同素环化合物

homocycle 碳环;同素环 | homocyclic compound 碳环化合物;同素环化合物 | homocyclic nucleus 碳环核;同素环核

homocyclic nucleus：碳环核;同素环核

homocyclic compound 碳环化合物;同素环化合物 | homocyclic nucleus 碳环核;同素环核 | homocyclic ring 碳环;同素环

epoxy value：环氧值

(35)环氧值(Epoxy value) 环氧值是表示100g环氧树脂中含有环氧基的当量数,即环氧值=100/环氧当量=(环氧基数目/环氧树脂分子量)×100%,环氧值愈大,分子量愈小,粘度愈低.

gromet ring：索环;帆布金属眼环;麻绳填料环

gromet ring 索环 | gromet ring 索环;帆布金属眼环;麻绳填料环 | grommet 护孔环;索环