查询词典 surface active agent

The cement concrete road surface is made up of road bed and road surface , two major parts ,, and form various kinds of shops of road surface to build layer, one layer of location and function in it, divided into surface layer , the basic unit and cushion layer mainly.

水泥混凝土路面是由路基和路面两大部分组成的，而构成路面的各种铺筑层，按其所处的层位和作用，又主要分为面层、基层和垫层。

Second, wetland landscape pattern dynamic change of Kenli County Take TM as the information source, according to studies the region wetland ecosystem present situation characteristic, wetland is divided into 10 kinds: irrigation paddy field, pit pond water surface, cultivation water surface, artificial ditch, reservoir water surface, salt field, rivers water surface, reed, shallow seas and tidelands, beach. The wetland landscape area is remarkable dropt from 1987 to 2004.In 1987 the wetland area occupied 14.10% of Kenli county, but only was 12.33% in 2004, it reduced 6155.12 hm2 in 17 years and average reduced 362.07 hm2 every year, the reduction scope of shallow seas and tidelands wetland is biggest 3894.78 hm2. The shallow seas and tidelands and reed are frequent transformation with other type.

2查清了研究区湿地景观格局动态变化规律以TM影像为信息源，根据研究区域湿地生态系统现状特征，把垦利县湿地分为10类；湿地景观面积在研究时段内呈显著下降趋势，1987年湿地面积占整个研究区总面积的14.10%，但到2004年只占12.33%，17年共减少6155.12 hm2，平均每年减少362.07 hm2，其中滩涂湿地面积减少幅度最大3894.78 hm2；从各湿地类型之间的转换来看，各种湿地景观之间、湿地和非湿地之间相互转化和逆转并存，滩涂和苇地与其他地类转换频繁；研究区湿地景观斑块数量增多，景观多样性指数1987年为1.7643，2004年下降到1.7105，均匀度指数由1987年的0.6873上升到2004年的0.6923。

In order to disclosure the reason why the electrocatalysis activeness and selectivity droped after being used several hundred hours continuously, the x-ray diffraction, scanning electron microscopy and energy dispersive spectroscope have been used to characterize the surface condition variations of Monel metal. The results indicated: Monel metal belongs to the Cu-Ni alloy around the electrolysis experiment.And after being used for 600hr, the surface layer element composition and geometry distribution of the alloy changed, namely in the alloy the Cu element /which superficial free enthalpy was smaller,"concentrated" to the alloy surface,and formed one kind of marble structure microcrystallite.Thus the electrode surface becamed rough a

为了揭示蒙乃尔合金阴极在连续使用数百个小时后电催化活性剂选择性下降的原因，采用X射线衍射仪、电子扫描电镜和电子能谱分析仪对电解实验所用的蒙乃尔阴极材料在电解实验前后的表面状态进行了表征，结果表明：所使用的蒙乃尔合金阴极材料在电解实验前后均属于Cu-Ni合金，使用600hr后，由于表面层元素组成和几何排布发生了变化，即合金中表面自由焓较小的Cu元素向合金表面&富集&，形成一种大理石结构的微晶，表面粗糙、不均一，这是造成其对硝基苯电还原的催化活性及选择性随着使用时间延长而逐渐下降的主要原因，同时也为此类电极的修饰改进提供了方向。

Big a peach-shaped thing produces one of dominant industries that become country of smooth cereal county in recent years, as Ping Gu prefectural government invests market of build big a peach-shaped thing, the big a peach-shaped thing of smooth cereal county " agent ", also rise to surface; how to be organized, the agent team that education, government gives to have quality, businesslike, health, industrial and commercial bureau makes the same score Beijing substation of industrial and commercial bureau undertook cereal county be explored actively.

大桃生产近年来成为平谷县农村的主导产业之一，随着平谷县政府投资兴建大桃市场，平谷县的大桃"经纪人"，也浮出水面；如何组织、培养、治理出一支有素质、有效率、健康的经纪人队伍，北京市工商局平谷县工商局分局进行了积极的探索。

Surface modified nano-sized mgnesium hydroxide was prepared by direct precipitation method with magnesium nitrate hexahydrate and sodium hydroxide as raw materials,and sodium fatty alcohol polyoxyethylene ether carboxylate as modifying agent.The optimum dosage of modifying agent was 0.2% of the mass of magnesium hydroxide,which was confirmed by sediment volume experiment.Modified and unmodified samples were characterized by fourier transform infrared spectroscopy,X-ray diffraction,transmission electron microscope,and tap density test.

以六水硝酸镁、氢氧化钠为原料，脂肪醇聚氧乙烯醚羧酸钠为改性剂，采用直接沉淀法一步合成改性纳米氢氧化镁，用沉降体积实验确定改性剂的最佳用量为氢氧化镁质量的0.2%，通过红外光谱、X射线衍射、透射电镜、表观密度对改性前后的样品进行表征。

ReShi Chemicals is a specialist in manufacturing and distributing metal surface treatment reagents: phosphorus treatment reagent, paints fog coagulating agent , electro-plating additive reagents, normal temperature nigrescence reagent, pre-treatment reagents ;refinishing paint total solutions; rare earth oxide compound ;offer burning inhabitor and deadening agent for rubber,special paints and Nylon industry.

专业为金属加工行业提供磷化处理药剂、水处理剂、电镀添加剂、钢铁常温发黑剂以及前处理产品；为汽车行业提供专业的汽车修补漆整套解决方案，喷漆房水处理解决方案；为玻璃陶瓷行业提供高性价比的稀土金属氧化物产品；为橡胶尼龙，涂料以及化妆品行业提供高效阻燃剂及消光剂。

It is to say that the patch of RAFT agent on the hairy chains.PS particles with the shell of copolymer of styrene and vinylbenzyl chloride were prepared by similar seeded and starved addition processes. RAFT agent with carboxyl end-group attached on the shell surface of PS particles by group reaction. Adding NIPA and photo-initiator into the continuous phase of polymerization system, hairy PNIPA were obtained.

最后，以表面负载一层乙烯基苄氯的亚微米级单分散聚苯乙烯微球为基质，将水溶性RAFT试剂与聚苯乙烯微球表面的官能团反应以负载到其表面，再在连续相中直接引入NIPA和光引发剂，RAFT聚合得到PNIPA毛发。

And the surface activity study shows 3, 4 may be used as a wetting agent, dispersant and defoamer agent etc..

表面活性分析显示3、4可作为润湿剂、分散剂和消泡剂等。

The electroless copper plating was studied in a bath consisting of glyoxylic acid as reducing agent,Na2EDTA as complexing agent,both 2,2′-dipyridyl and K4Fe6 as additives,focused on the influence of the additives on the deposition rate,as well as on the composition,structures and surface morphology of the deposits.

以乙醛酸作还原剂、Na2EDTA为络合剂、2，2′-联吡啶和亚铁氰化钾作为添加剂组成化学镀铜体系，研究了两种添加剂对化学镀铜速率、镀层表面形貌、组成和结构的影响。

This product is a solvent-permeable protective agent, as the protective agent can have chemical bonding reaction with the stone, it can form a protective film with very low surface energy, and this film can excellently resist water and oil, and can retain the natural air permeability of the stone.

Product features ●本品为溶剂型渗透性防护剂，由于防护剂能与石材等产生化学键合作用，形成一道表面能极低的防护层，从而起到良好的防水、防油性，同时保持了石材的天然透气性。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。