| 1. | The effects of various parameters on growth of the films were studied . it was observed that the size of particles in the films is decreased with the deposition pressure
在本工作中，着重研究了主要工艺参数对纳米- sic薄膜生长特性的影响。 |
| 2. | The experimental results showed that sizes of particles increased in varying degrees with the increase of heat - treating temperature ; moreover the agglomeration of particles became more serious
结果表明:随着热处理温度的升高， zno纳米粒子的粒径不同程度地增大，且团聚现象加重。 |
| 3. | The tem micrographs of composite powders indicated that the size of particles after electroless plating increased from 10 ~ 20nm to 50 ~ 60nm and the originally granular form changed into spheral - like shape
透射电镜观察表明，粉体颗粒镀覆后粒径由10 20nm增加到50 60nm ，颗粒外观由棱角状变成近似球形，镀覆均匀性较好。 |
| 4. | Based on one dimension flow theory and lagrange method , the correlation of speeding rate of particles under gas flow drag with the size of particles and the length of laval nozzle used for the gas and solid two - phase separation test apparatus was studied
摘要采用一元流动理论和拉格朗日方法，研究了用于气、固两相分离试验装置的缩放喷管内，被气流拖曳的颗粒加速率与颗粒大小和缩放喷管长度的关系。 |
| 5. | Zn power , se power and diethylamine was used as the sources in this method and nanocrystal znse powders were synthesized at 225 . these powders have been identified as polycrystal znse with zinc blende structure by xrd . the size of particle is about 100nm ~ 200nm
采用zn粉和se粉为原料，以二乙胺为溶剂，在225下得到了znse粉末， xrd结果显示其为znse多晶粉末，从tem照片可看出其颗粒的尺寸约为100nm 200nm 。 |
| 6. | As the size of particles increases , the scattering intensity increases ; as the size of particles increases , the horizontal polarization becomes unsymmetrical while vertical polarization invariable ; with the imaginary parts of complex refractive index increasing , the scattering intensity decreases
当粒子尺度增加时，散射光强增加；水平偏振变得不对称，而垂直偏振没有变化；当粒子的折射率虚部增加时，散射光强减少。 |
| 7. | Nanoparticles show significant quantum - size effect ( such as energy band discreteness , band gap broadening , blue shift in spectra etc . ) as sizes of particles are smaller than bohr radis of exciton of bulk material with same composition ( for example , cds ’ s bohr radium is 6nm )
当纳米粒子的尺寸小于其块状材料的激子波尔半径时(如cds的激子波尔半径为6nm ) ,能够表现出明显的量子尺寸效应(如能带离散,禁带变宽,光谱蓝移等) 。 |
| 8. | Using metal for reaction material , sno2 and tio2 nano - powders were obtained through dc transferred arc plasma with purity more than 98 % and average size of particle being l00nm and 60nm , in the same time the particle size could be adjusted according to the cooling medium
用直流电弧等离子体“蒸发?凝聚法”以金属块体为原料，制备出了纯度大于98平均粒度分别为100nm和60nm的sno _ 2及tio _ 2纳米粉末，并且粉末的粒度可以通过调整冷却介质来加以控制。 |
| 9. | The observation by hrtem indicated that the size of particles coated with ultrasonic radiation at room temperature in alkaline formaldehyde bath was about 50 ~ 60nm . the originally granular form of the nano - al2o3 particles has changed into spheral - like shape . the x - ray analysis showed that the plate was the alloy of co - p
对镀覆后镀液成分的分析表明，反应自发停止的原因是主要由于镀液ph值过低，不能提供反应所需要的足够oh ~ - ，同时也使甲醛还原能力下降所致。 |
| 10. | It is shown that with the decrease in size of particles , their velocity at the exit of laval nozzle increases under the conditions of both the invariable gas parameters and the same laval nozzle length ; the laval nozzle length increases with the size of particles under the same speeding rate of particles
研究表明，在气流参数和缩放喷管长度不变的情况下，被气流拖曳的颗粒越大，颗粒在缩放喷管出口处的速度就越低；在颗粒加速率相同的情况下，颗粒越大，所需的喷管长度就越长。 |
