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Compared with the Epoxy resorcinol-formaldehyde resin pretreatment system and Maleic anhydride pretreatment system developed by Xusigui, the 40% carbolated styrene-butadiene latex system can keep the composite"s properties and reduce the cost of pretreatment and simplify the pretreatment technology; especially to the HST 2073 latex system, the composite"s mechanics properties are improved greatly. Secondly, the composite"s comprehensive properties and interface performance are improved by reinforced with short fiber grafted with rubber in the surface. Thirdly, to simplify the production technology of composite, we add TKM-M and RF-90 as adhesive agent to the composite blended in an internal mixer, so as to the composite can be used to industry widely, then the effect of the amount adhesive agent on the composite"s properties and interface adhesive performance was studied, from the experiments the optimum amount of adhesive agent was deduced.

其中采用特软羧基丁苯胶乳预处理短纤维的方案,降低了预处理成本,相对许泗贵的低分子环氧和马来酸酐体系来说,预处理工艺大大简化了,而材料的力学性能保持良好,尤其是 HST 2073A 胶乳预处理体系,力学性能有较大幅度的提高;第二,通过对尼龙短纤维表面进行接枝橡胶分子链预处理,改善了复合材料的界面粘合性能,复合材料的综合性能也得到了相应的提高;第三,为了简化复合材料的生产工艺,使复合材料的应用得到工业化推广,我们选用TKM—M和RF—90长效增粘剂,直接加入短纤维橡胶复合材料中,采用密炼工艺,探讨了增粘剂的用量对复合材料界面粘合以及性能的影响,得出了增粘剂在复合材料中的最佳用量。

This paper reviewed the development trend of chemistries in carbonless copying paper and the pressure-sensitive color-developing microcapsules.

文章论述了无碳复写纸及其化学品材料的发展动态,着重讨论了压敏显色微胶囊,阴离子聚电解质苯乙烯马来酸酐共聚物和显色剂树脂的制备工艺及研究进展。

In the present study, we examine the chloroplast genomes of Ceriops tagal along the coasts of both sides of the Kra Isthmus to retrace divergence events and to evaluate the probability of previous long distance dispersal.

在此研究中,我们利用了母系遗传的叶绿体DNA作为分子标帜,试图追溯分布在克拉地峡两岸的红树林之细蕊红树是否受到马来半岛的隔离影响,导致遗传上的分歧,进而评估横跨海域的长距离扩散的可能性。

Soon after, the people living around Rasah moved to Channer Road for the sake of security and its orderly administration

锡的在附近地区发现,名为亚沙,出现了大量的阿拉伯,马来和华人移民涌入工作的地雷和贸易有。

Mono-cinnamyl maleate was prepared by esterification of maleic anhydride and cinnamyl alcohol of 1 mol:2 mol at 95 ℃ for 2~4 h.Then added isomeric catalyst and mono-cinnamyl fumarate was made by reacting at 90 ℃ for 4 h.After methanol (methanol:mono-cinnamyl fumarate = 6 mol:1 mol) was added,the mixture maintained at 90 ℃ for 4.0 h to synthesize CMF.

合成试验表明:以摩尔比为1:2的马来酸酐与肉桂醇在95 ℃醇解反应2~4 h后加入异构化催化剂,90 ℃转型反应4 h后,添加6倍摩尔质量的甲醇,在90 ℃恒温反应4 h,反丁烯二酸桂醇甲酯的合成产率较高。

A mixing performance analysis on the different screw configuration in the process of twin screw codirectional extrusion;2. The filling ratios in the main reactive zones were estimated by clam barrel for different screw configuration s.

研究了不同螺杆构型下的充满度以及低密度聚乙烯熔融接枝马来酸酐的过程,探讨了不同螺杆构型下充满度与接枝反应挤出过程的关系。

N-p-tolylmaleimide is a kind of monomer to copolymerize with MMA to enhance the thermal stabilities of PMMA.In this article, NPTMI was prepared from the reaction of maleic anhydride and p-toluidine in one stage, which was testified by FTIR. The mp. of NPTMI was 154 and consistent with the literature.

目前国外对这方面的研究比较成熟,国内研究的较少,且还没有对N-对甲基苯基马来酰亚胺、MMA和第三单体丙烯腈或苯乙烯共聚以制备耐热PMMA树脂及其性能的研究。

The composite catalyzercan effectively catalyze cyclize reaction on the sysnthesis of N-phenyl maleimide.The yield of NPMI arrives at 90%,and the purity is 98.15%.

合成N-苯基马来酰亚胺的最佳工艺条件为;原料摩尔配比为1;1.2;溶剂为20;1;初期反应温度为40~50℃,环化反应温度为135℃;环化时间为2h。

The composite catalyzercan effectively catalyze cyclize reaction on the sysnthesis of N-phenyl maleimide.

合成N-苯基马来酰亚胺的最佳工艺条件为;原料摩尔配比为1;1.2;溶剂为20;1;初期反应温度为40~50℃,环化反应温度为135℃;环化时间为2h。

Photoinduced Electron Transfer [2+2] Cycloaddition Reactions ofBenzannelated Isoquinolin-1-ones with Electron Deficient Alkenes Photoinduced [2+2] cycloaddition reactions of 11H-benzoxazolo[3,2-b]isoquinolin-11-one 8 and 11H-benzothiazolo[3,2-b]isoquinolin-11-one 13 with electron deficient alkenessuch as acrylonitrile, methyl acrylate, dimethyl fumarate and dimethyl maleate afforded a group of polycyclic isoquinoline derivatives bearing cyclobutane moieties ingood to excellent yields and resulted in the Schenck isomerization of the alkenes.

3苯并增环异喹啉-1-酮与缺电子烯烃的光诱导电子转移[2+2]环加成反应 11H-苯并恶唑[3,2-b]异喹啉-11-酮8和11H-苯并噻唑[3,2-b]异喹啉-11-酮13与缺电子烯烃如丙烯腈,丙烯酸甲酯,富马酸二甲酯及马来酸二甲酯的光诱导[2+2]环加成反应以高产率给出一系列含有环丁烷结构单元的多环异喹啉衍生物并导致烯烃的Schenck异构化作用。

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