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polymeric     
相关语句
  聚合物
     Preparation and Properties of Polymeric Composites Filled with Low-Melting-Point Alloy
     低熔点合金聚合物基复合材料的制备与性能研究
短句来源
     Study on Molecularly Imprinted Polymeric Composite Microspheres with Magnetic Susceptibility
     分子印迹聚合物磁性复合微球的制备及其特性研究
短句来源
     Design, Synthesis and Properties of Novel Electro-Optical Polymeric Materials and High Performance Polymers
     新型电光高分子和高性能聚合物的设计、合成与性能
短句来源
     Design, Synthesis and Performance of Organic and Polymeric Photovoltaic Materials
     有机/聚合物光伏材料的设计、合成及其性能研究
短句来源
     Study on the Metal Ion Imprinted Polymeric Microspheres
     金属离子印迹聚合物微球的研究
短句来源
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  高分子
     Synthesis and Analysis of PDMDAAC and P(DMDAAC-AM) as Cationic Polymeric Flocculants
     阳离子型高分子絮凝剂PDMDAAC与P(DMDAAC-AM)的合成及分析
短句来源
     Study on Morphology Control of PEG-g-PAN/PS Polymeric Particles
     PEG接枝PAN/PS高分子颗粒的形态控制研究
短句来源
     Synthesis of Cationic Polymeric Flocculant-DMC Copolymer P(DMC-AM)
     阳离子型高分子絮凝剂P(DMC-AM)的合成
短句来源
     Synthesis and Performance Properties of P(AM/DM/MA) as Amphoteric Polymeric Flocculant
     两性高分子絮凝剂P(AM-DM-MA)的合成及性能评价
短句来源
     The Structure and Properties of Nano-TiO_2 and Its Polymeric Composites
     纳米TiO_2光触媒及其高分子复合材料的结构与性能
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  聚合
     Continuous Determination of Fe_2O_3、Al_2O_3and the Ratio of [OH]/3[Al] in Polymeric Aluminum Chloride
     聚合氯化铝中Fe_2O_3、Al_2O_3含量和碱化度的连续测定
短句来源
     A STUDY ON THE POLYMERIC DISTRIBUTION OF SiO_4~(-4) TETRAHEDRON IN SILICATE GLASSES Ⅲ.POLYMERIC STRUCTURE OF Na_2O-CaO-SiO_2 GLASSES
     硅酸盐玻璃中SiO_4~(4-)四面体聚合分布的研究——Ⅲ.Na_2O-CaO-SiO_2玻璃的聚合结构
短句来源
     while oil content is between 30 mg/L~50 mg/L, polymeric aluminum chloride content in floatation tank is 100 mg/L, flux of gas absorption water is 8.5 t/h;
     当污水油的质量浓度为30~50mg/L时,聚合氯化铝质量浓度为100mg/L、气溶水流量为8.5t/h;
短句来源
     Results The results in the present paper showed that contents of NPEOs(n=5-15) were between 0.210-3.355 μg/L and NPEOs of different polymeric number(n) didn't approximate to Gauss distribution.
     结果不同原水中的NPEOs浓度(n=5~15)为0.210~3.355μg/L,不同聚合度NPEOs的浓度不呈现高斯分布;
短句来源
     STUDY ON HYDRATION RATE OF CEMENT AND POLYMERIC STRUCTURE OF[SiO_4] ̄(4-)TETRAHEDRA USING  ̄(29)Si-NMR AND TMS-GC
     ~29Si-NMR法和TMS-GC法研究水泥水化速度及[SiO_4]~(4-)四面体聚合结构
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  聚合的
     Polymeric metavanadate species existed on the surface of wire-mesh-honeycomb loaded with V(l)-W(3)/TiO_2. Almost no entrance effect was observed for wire-mesh-honeycomb with its length above 5cm.
     V( 1) W ( 3 ) /TiO2 的蜂窝状筛网催化剂表面存在聚合的钒基物种。 催化剂长度大于 5cm时 ,不存在进口效应。
短句来源
     The polymeric behavior,polymerjc activity and molecular weight adjustment in butadi ene polymerization injtated by the Ni (naph)2-i-Bu3Al2Cl3 system were investigated. It was revealed that the bet molar ratio of Cl/Al depended on the third--component and that the molar ratio of Al/Bd,rather than of Ni/Bd,had a considerable effect on the catulytic activity.
     Ni(naph)_2-i-Bu_3Al_2Cl_3催化丁二烯聚合的研究徐玲,李绍军,陈滇宝,仲崇淇,唐学明(高材系)0前言目前,我国镍系顺丁橡胶工业化生产采用以加氢汽油为溶剂,Ni--Al陈化,稀B单加的聚合工艺[1],但由于BF3·OEt2在加氢汽油中.
短句来源
     Stable high solid-containing latex of polyacrylic acid was obtained by inverse emulsionpolymerization in which both polymeric and common emulsifiers were used.
     用反相乳液聚合的方法,以高分子乳化剂与低分子乳化剂复配作为乳化系统,合成了稳定的高固含量的油包水型(W/O)聚丙烯酸胶乳。
短句来源
     The polymeric behavior of isobutylene initiated by TiCl4-C60Cln(the novel fullerenes catalyst system)were investigated. The effects of C60 and its derivatives were also studied by comparing this system with TiCl4 traditional cationic catalyst system.
     研究了碳笼烯非质子酸催化体系( Ti Cl4 - C60 Cln) 引发异丁烯正离子聚合的反应规律,并与 Ti Cl4 正离子催化体系进行了比较。
短句来源
     Tile paper mainly dealt with the potymeric methods and factors of poly- chloroprene(CR)linking with MMA,BA and AA,initiator,the sequence and the polymeric reactive temperature. The best prescription and process of branch linking polymerisation have been decided. The peeling strength of three-component branch linking adhesivs under the best condition is 6.6kN/m.
     探讨了引发剂,MMA、BA、AA 的加入量,加入顺序及反应温度对氯丁橡胶与MMA、BA、AA 接枝聚合的影响,找到了最佳的接枝聚合工艺条件,在此条件下所配制的三元接枝胶粘剂的剥离强度为6.6KN/m.
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      polymeric
    Both metalation reaction with n-butyllithium and hydrochlorination reaction with dry hydrogen chloride selectively and quantitatively occurred at the pendant reactive sites, generating polymeric benzyllithium and 1-chloroethylbenzene species.
          
    New approaches to stimuli-responsive polymeric micelles and hollow spheres
          
    This article briefly describes some new approaches to stimuli-sensitive polymeric micelles and hollow spheres, which were developed in the authors' laboratory in recent years.
          
    Generalization of in-situ polymerization method for preparing core-shell polymeric nanospheres and hollow spheres
          
    They were crosslinked in situ via the radical polymerization of the vinyl group initiated by BPO after doping with lithium trifluoromethanesulfonimide (LiTFSI) to give rise to tough polymeric electrolyte films.
          
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    A new iodine heterocycle, 3,6-dinitro-dibenzopyriodonium bisulfate (Ⅲa), prisms, m.p. 217.5° (dec.), was found to be readily prepared in 86% yield by treating 4,4'-dinitrodiphenylmethane with iodosyl sulfate, which was conveniently obtained by stirring a stoichiometric mixture of iodine and sodium iodate in concentrated sulfuric acid. The iodonium compound (Ⅲa) could be converted to the chloride (Ⅲb), colorless needles, m.p. 211.5° (dec), bromide (Ⅲc), yellowish needles. m.p. 217.5° (dec.), iodide (Ⅲd), yellow...

    A new iodine heterocycle, 3,6-dinitro-dibenzopyriodonium bisulfate (Ⅲa), prisms, m.p. 217.5° (dec.), was found to be readily prepared in 86% yield by treating 4,4'-dinitrodiphenylmethane with iodosyl sulfate, which was conveniently obtained by stirring a stoichiometric mixture of iodine and sodium iodate in concentrated sulfuric acid. The iodonium compound (Ⅲa) could be converted to the chloride (Ⅲb), colorless needles, m.p. 211.5° (dec), bromide (Ⅲc), yellowish needles. m.p. 217.5° (dec.), iodide (Ⅲd), yellow powder, m.p. 164° (dec.) and picrate (Ⅲe), yellow needles, m.p. 183-184° (dec.) by treating its solution in formic acid with a 50% formic acid solution of sodium chloride, sodium bromide or potassium iodide or with an alcoholic solution of picric acid respectively. The structural formula (Ⅲ) of the new iodonium compounds was derived by means of potassium permanganate oxidation of the bisulfate (Ⅲa) to 2-iodo-4-nitrobenzoic acid, and by thermal decomposition of the iodide (Ⅲd) to 2,2'-diiodo-4, 4'-dinitro-diphenyl-methane (Ⅵ) (60% yield), m.p. 158-159°, the structure of which was shown by analysis and by comparison with what is known about the behavior of other iodonium iodides, e.g., 4,4'-dicarboethoxy-diphenylene iodonium iodide (Ⅷ), which decomposes on heating yielding 2,2'-diiodo-4,4'-dicarboethoxydiphenyl (Ⅸ). Compound (Ⅵ) could be reduced with tin and hydrochloric acid to a diamino compound (Ⅶ).The iodonium salt (Ⅲa) possessed the interesting property that when it was treated with dilute sodium hydroxide solution at room temperature with the addition of ethyl acetate or pyridine, a beautiful bluish-green color gradually developed in the organic layer. When it was heated with dry pyridine, the same color developed. The colored ethyl acetate solution changed to brownish yellow on acidification with dilute sulfuric acid and regained its bluish-green color when the acidified solution was made alkaline.Under similar conditions as described above, reaction between diphenylmethane and iodosyl sulfate gave a grayish substance, m.p. 210-212°, which was insoluble in common solvents. This substance was possibly a polymeric compound of formula (Ⅺ).

    1.4,4'-二硝基二苯甲烷(Ⅰ)與硫酸亚碘醯(Ⅱ)作用,生成一种新型的含碘杂環化合物(Ⅲ_a)。 2.化合物Ⅲ_a與氯化鈉、溴化鈉、碘化鉀或苦味酸作用,置换成为相應的鹵化物(Ⅲ_(b-d))或苦味酸盐(Ⅲ_e)。 3.用鹼性高錳酸鉀溶液氧化化合物Ⅲ_a得2-碘代-4-硝基苯甲酸。 4.碘化物(Ⅲ_d)在它的熔點温度进行熱解,得2,2'-二碘代-4,4'-二硝基二苯甲烷。继还原,得相應的二氨基化合物。二者均为新化合物。 5.化合物Ⅲ_a用氢氧化鈉溶液处理,得到蓝绿色物質,溶於乙酸乙酯、丙酮、吡啶中成鲜明的蓝绿色溶液。乙酸乙酯溶液酸化後变成黄棕色,再鹼化復现蓝绿色。将化合物Ⅲ_a在无水吡啶中加熱,亦呈现蓝绿色。 6.在类似的条件下,二苯甲烷與硫酸亚碘醯起作用。

    Dithio-oxamide condensed with 1,3-dichloroacetone in acetone in the presence of precipitated calcium carbonate to form 4,4'-dichloromethyl-2,2'-dithiazolyl (Ⅰ). It melted at 165°. The condensation between these two compounds was complicated by the formation of polymeric compound in case they were heated in ethanol at its boiling temperature.

    1.二硫代乙二酰胺和1,3-二-氯代丙酮在丙酮中和在沉淀碳酸钙存在时缩合得4,4'-二-氯代甲基-2,2'-双噻唑。 2.4,4'-二-氯代甲基-2,2'-双噻唑的两个氯原子反应性能和一级烷基氯相同,能被(1)碘原子:(2)CH_3COO—基团:(3)C_6H_4(CO)_2N—基团:(4)(CH_3)_2N—基团,(5)基团,(6)C_6H_5O—基团,(7)ρ-CH_3C_6H_4O-基团,(8)(C_2H_5)_2N—基团所取代。 3.2,2'-双噻唑-4,4'-二甲基异硫脲二盐酸盐和氫氧化钾溶液共沸得2,2'-双噻唑-4,4'-二甲基二硫醇。 4.其季铵盐可由二法制得:(1)4,4'-二-氯代甲基-2,2'-双噻唑和三甲胺缩合产生二氯化六甲基2,2'-双噻唑-二甲基二铵。(2)4,4'-(N-四甲基-二-氨甲基)-2,2'-双噻唑和碘代甲烷生成二碘化六甲甚2,2'-双噻唑-4,4'-二甲基二铵;相似地-4,4'-(N-四乙基-二-氦甲基)-2,2'-双噻唑和碘代乙烷生成二碘化六乙基2,2'-双噻唑-4,4'-二甲基二铵。

    The radiation copolymerization of tetrafluoroethylene and hexafluoropropylene was investigated at ?78 ℃ with a 20,000-curie Co60 γ-source. Values of the copolymerization rate constant were found to decrease with the increase of the amount of hexafluoropropylene in the monomer mixtures. This indicates that hexafluoropropylene has a lower copolymerization reactivity. Values of n in the rate equation R = KIn are 0.60, 0.78, and 0.85, as the mole fractions of hexafluoropropylene in the monomer mixtures are 0.1,...

    The radiation copolymerization of tetrafluoroethylene and hexafluoropropylene was investigated at ?78 ℃ with a 20,000-curie Co60 γ-source. Values of the copolymerization rate constant were found to decrease with the increase of the amount of hexafluoropropylene in the monomer mixtures. This indicates that hexafluoropropylene has a lower copolymerization reactivity. Values of n in the rate equation R = KIn are 0.60, 0.78, and 0.85, as the mole fractions of hexafluoropropylene in the monomer mixtures are 0.1, 0.5, and 0.7, respectively. This signifies that an increase in hexafluoropropylene concentration lowers the propability of biradical termination.A post-effect of the copolymerization was noticed. It was found that values of kp/ki in post-polymerization increase with the irradiation dosage. This fact is explained as due to the decrease in k2 resulting from the enrichment of trapped polymeric radicals as a consequence of increased "in source" conversion on higher irradiation dosages.The effect of some common organic solvents and inhibitors on the copolymerization rate was also studied. Most of the results support a free-radical mechanism for this low-temperature liquid-phase radiation copolymerization; possibilities of simultaneous radical-cationic polymerization or of cationic polymerization, however, can not be ruled out.

    进行了四氟乙烯与全氟丙烯在-78℃的辐射共聚合。辐照是在20,000居里的钴源中进行的。测定了不同组分的单体混合物的共聚反应速率常数(是),发现k值随单体混合物中全氟丙烯含量增加而递减。这表示全氟丙烯的共聚活性较低。测得的辐射剂率对共聚反应速率关系式(R=KI~n)中的n值系随全氟丙烯含量增加(克分子分数为0.1,0.5及0.7)而递增(分别为0.60,0.78及0.85)。这意味着增加全氟丙烯含量降低了双基终止的几率。 研究了共聚反应的后效应。发现后聚合反应的k_p/k_t值随辐照剂量增加而递增,这是由于辐照剂量增大相应地增加了“在源”聚合的转化率(共聚物不溶于单体),因而诱陷了较多的游离基,以致降低了k_t值的结果。 观察了一些常用的溶剂及阻聚剂对共聚反应速率的影响。大部分的结果支持这一低温液相辐射共聚反应是游离基型反应。但也不排除在某些情况下是阳离子型和游离基型并存或是阳离子型的可能。

     
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