Mma

A study on the photoinduced electron transfer initiation polymerization of MMA by system of N-substituted n'-phenylpiperazine and thioxanthone

N-取代N′-苯基哌嗪类化合物与硫杂蒽酮体系光诱导电子转移引发聚合体系的研究

互联网摘选

For high order QAM ( Quadrature Amplitude Modulation) signals, the residual square error of CMA ( Constant Modulus Algorithm) is unacceptably large and the convergence rate of MMA ( Multi Modulus Algorithm) is too slow.

对于高阶QAM信号，常数模算法的收敛误差不为零，而多模算法的收敛速度慢。

互联网摘选

Acetone, highly toxic hydrocyanic acid and sulphuric acid are used as raw materials in traditional method to produce MMA. The seriously poisonous substances and the strong acid not only results in the obvious environment pollution, but also results in the numerous ammonium bisulfate byproduct.

MMA传统的合成方法是以丙酮、剧毒的氢氰酸和硫酸为原料，不仅是非环境友好工艺，且副产大量硫酸氢铵。

互联网摘选

Abstract Kinetics of BPO-initiated graft polymerization of methyl methacry-late ( MMA ) onto styrene-butadiene-styrene ( SBS ) has been studied.

本文研究了以过氧化苯甲酰(BPO)为引发剂,甲基丙烯酸甲酯 ( MMA ) 在苯乙烯 — 丁二烯 — 苯乙烯 ( SBS ) 上接枝聚合的动力学.得到了该聚合反应的表观速率与MMA的 浓度,BPO的浓度以及聚合温度的关系.

互联网摘选

During the hydrosilylation reaction, the thermal polymerization of MMA also happened.

在硅氢加成反应的同时伴随有MMA的热聚合反应发生。

互联网摘选

RAFT Living Free Radical Polymerization of St and MMA in Different Reaction Media

St和MMA在不同反应介质中的RAFT活性自由基聚合

互联网摘选

I'mma break that birdies neck.

我就要扭断那些鸟的脖子.

互联网摘选

If we use MMA for bedrock consolidation grouting, the parameters of weakly weathered rock can be lifted to the level of slightly weathered or fresh rock.

用于基岩固结灌浆，能使弱风化岩体的参数提高到微风化或新鲜岩体的水平；

互联网摘选

Methyl methacrylate ( MMA )-styrene ( ST ) copolymers were synthesized a suspension copolymerization with the different molecular weight.

采用悬浮聚合法合成了两种不同分子量的甲基丙烯酸甲酯 ( MMA ) - 苯乙烯 ( ST ) 共聚物.

互联网摘选

Self-emulsification epoxy resin was prepared in the presence of hydrophilic monomer: AA, HEA and hydrophobic monomer: MMA, St. The application of phase inversion soap-free emulsification on the modifying of crylic acid resin using epoxy resin was investigated.

利用环氧树脂与亲水单体AA、HEA以及MMA、St等接枝共聚，合成自乳化的环氧树脂，运用无皂相反转法，进行环氧树脂改性丙烯酸树脂的研究，制备防腐底漆。

互联网摘选

The ESR results show that the polymerization of MMA follows a free radical mechanism.

ESR研究结果表明，MMA单体聚合遵循自由基聚合机理。

互联网摘选

Synthesis and characterization of telechelic oligomers and their multiphase copolymers& ⅶ. studies on Pu single networks in polyether Pu/ mma semi-IPN system

遥爪型液体聚合物及其多相共聚物的合成与表征&Ⅶ.聚醚聚氨酯/甲基丙烯酸甲酯半-IPN体系中聚氨酯单一网络的研究

互联网摘选

The results reveal that copper mediated graft copolymerization of MMA on BSA is free radical polymerization, similar to an emulsion polymerization.

结果表明铜离子介入的MMA在BSA上的接枝聚合属于自由基聚合反应，并表现出乳液聚合的特征。

互联网摘选

The rarefied was used as transfer agent for the RAFT polymerization of MMA and St in bulk and toluene, the polymerizations were found with living characters.

利用合成的二硫代苯甲酸苯乙基酯为链转移剂，成功实现了MMA和St在本体及甲苯中的RAFT活性自由基聚合，结果表明均有较为明显的活性聚合特征。

互联网摘选

The P ( VAc-MMA-AA ) emulsion shows apparent improvement in freezing resistance, adhesive strength as well as water-resistance.

结果表明,所得改性P ( VAc -MM A - AA ) 共混乳液的耐水性、耐热性 、 耐寒性及粘结强度较PV Ac均聚物乳液均有明显改善.

互联网摘选

IR spectrum proved that the monomers AC and MMA had been really grafted onto NR.

红外光谱证实单体AC和MMA已接技到橡胶分子链上.

互联网摘选

Development of CR. SBS/ MMA. AA Tetrabasic Grafted Adhesive

CR.SBS/MMA.AA四元接枝胶粘剂的研制

互联网摘选

Implements the model system of MMA with JAVA-JDK.

选用JAVA-JDK编程环境实现了MMA的原型系统。

互联网摘选

Three welding modles: DC TIG, PulsedTIG, DC MMA.

集直流氩弧焊 、 脉冲氩弧焊 、 直流手工焊于一体.

互联网摘选

In this paper, chain transfer constant of graft copolymerization of SBS and MMA was determined.

测定了MMA与 SBS接枝共聚合的链转移常数, 讨论了引发剂浓度、温度及溶剂对链转移常数的影响.

互联网摘选

Suitable for MMA, argon arc, arc gouging welding.

可用于手工电弧焊 、 氩弧焊 、 电弧气刨.

互联网摘选

look for gsp to add to his marketing income through licensing deals overseas in countries that are big on mma like russia, the philippines and the uk.

预期圣皮埃尔将会通过在俄罗斯、菲律宾和英国等综合格斗运动拥有广大爱好者的国家签署海外授权协议，进一步提高自己的营销收入。

互联网摘选

Influence of various polymerization methods on residual monomer content of denture base materials.

聚合方法对基托材料残留单体的影响——高效液相色谱法分析MMA含量.

互联网摘选

The graft copolymer EPDM-g-MMA with good mechanical properties could prepared under optimum conditions.

在适宜条件下,可以制得较好综合性能的接枝共聚物.

互联网摘选

the oc algorithm and the mma ( method of moving asymptotes) algorithm based on simp approach are deduced and used for the topology optimization problem of continuum structure.

研究了拓扑优化求解算法，主要是优化准则算法（OC）和数学规划算法（MP），推导了基于SIMP模型的优化准则算法和移动渐进线算法。

互联网摘选

MMA is a chemical used in consumer products including plastics, paints and adhesives.

MMA是应用于包括塑料制品 、 油漆以及粘合剂等消费品的一种化学原料.

互联网摘选

Objectives To summary the clinical characteristic of l ate onset methylmalonic aciduria ( MMA ).

目的　总结晚发型甲基丙二酸尿症 ( MMA ) 的临床特点.

网络文摘精选

It was observed that the MMA content had important effects on the appearance, storage stability, mechanical properties and hydroscopic coefficient of the PUA emulsion.

结果表明，MMA对乳液外观、贮存稳定性、力学性能、吸水性等均有重要影响。MMA最佳含量为20%～30%。

互联网摘选

Photopolymerization of MMA was studied Kinetically using thioxanthone ( TX)/ triethylamine ( TEA)/ oxygen system as initiator. The various factors influencing the polymerization rate were studied.

本文研究了硫杂蒽酮（TX）/三乙胺（TEA）/氧体系引发甲基丙烯酸甲酯（MMA）光聚合的动力学及影响聚合速度的各种因素。

互联网摘选

Three welding modes: DC pulsed TIG, DC MMA.

集直流氩弧焊,脉冲氩弧焊, 直流手工焊于一体.

互联网摘选