分散度

English:Activated alumina is a porous solid material with high dispersion and large specific surface area, which has fine adsorption capability, fine pressureproof performance, fine wear resistant performance and fine heat-resistant performance, and as a result it is widely used as adsorbents.

产品简介：活性氧化铝是一种具有多孔性高分散度的固体物料，有很大的比表面积，既有良好的吸附性能，又有良好的耐压、耐磨损和耐热性能，因而，被广泛地用作高效吸附剂、干燥剂本品为白色，球状多孔性物质无毒、无臭、不粉化、不溶于水。

Colloidal gold was reductively prepared by sodium citrate,sodium citrate-tannin,ascorbic acid and sodium borohydride respectively.And corresponding gold particles size,morphology,dispersion,and stability of the samples were characterized and compared.

分别采用柠檬酸钠还原法、柠檬酸钠-鞣酸还原法、抗坏血酸还原法、硼氢化钠还原法4种方法制备了粒径为十几纳米的胶体金，并对制得的纳米胶体金粒径大小、分散度、稳定性及形貌进行了表征和比较分析。

Then, nanoparticles were prepared with a reprecipitation method and tested. We found that the nanoparticles with small size and lower poly-dispersion index can be prepared though shortening deposited time, decreasing concentration, increasing deposited temperature and adding surfactant.

利用二次沉淀法制备出三种有机分子不同粒径的纳米微粒，通过改变时间、浓度、温度、表面活性剂等实验条件分析这些因素对纳米微粒粒度的影响，发现缩短放置时间、减少有机稀溶液的注入量、升高放置温度、加入表面活性剂可以得到小粒度，低分散度的纳米微粒。

A mixture of lithium tetraborate (Li2B4O7) and lithium metahorate (LiBO2) in a ratio of 2:3 and mass ratio of sample to flux of 1:10 were used with sample fusion condition of 1200℃ and 15 min.

试样和混合熔剂的质量比为1：10，在此稀释比时试样在熔剂中的分散度适当，可适应各个组分的测定。

Compared with the unpromoted catalyst, the presence of BaO increased the initial activity and Co dispersion, but decreased the Co particle size.

氧化钡提高了Co/SiO2的初活性和钴的分散度，降低了钴的颗粒度；添加0.5%~1.5%氧化钡有利于提高Co/SiO2的稳定性。

These nanoparticles were disk-shaped having a height of 10-〓 and an apparent diameter varing from 200 to〓 The particle dimensions increased with the electropolymerization charge over the interval from 5.7 to 19.3μC/cm〓.

STM图像显示通过这种方法制得的Ag纳米颗粒的大小十分均一且在HOPG表面上的分散度很高。这种新方法可被广泛地用来在碳表面制备各种金属纳米粒子。

On the basis of experimental investigations,two types of laser detonators were developed.

在这些实验的基础上研制了两种激光雷管，进行了多分支光导束传输激光同步引爆多发雷管的实验，引爆时间的分散度与通常瞬发电雷管相同。

Feed aprons and stock guide plates with different angles and spacing are being equipped inside the cylinder, the structure can ensure that the material being dried runes along the direction of screwing under the impact of gravitation and keeps for a sufficient maintaining times and dispersity in the cylinder to make the material has sufficient heat exchange with the heat airflow from air heating furnace inside of the cylinder.

三筒烘干机是引进欧洲先进技术，由三个不同直径的同心圆筒彼此相嵌组合而成的。筒内装有不同角度和间距的扬料板和导料板，这种结构能够保证被烘干物料在重力作用下沿着螺旋的运动方向运动，在筒内保持足够的停留时间和充分的分散度，使被烘干物料在筒内与来自热风炉内的热气流进行充分的热交换。

Surface tension of nanometer particle La(1-x)Sr_xMnO_3 can be reduced remarkably that adding un-ionic surface-active agent. It prevent colloidal particle from growing up and original particle reuniting, thereby minish effectively particle size of oxide and improve its dispersing.

添加非离子表面活性剂可以显著降低纳米微粒 La_(1-x)Sr_xMnO_3的表面张力，防止原生粒子团聚和胶体粒子长大，从而有效地提高粉体的分散度并减小粒径。

Both oil removal rate and the distribution of particle sizes are important parameters for the effect of oil-containing waste water treatment.

除油率和油珠粒径分散度是检验石化含油废水处理效果的两个重要指标。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。