查询词典 dispersion

The abundance of Ba element is decreases with decrease of metallicity with large dispersion.

6Ba元素丰度随金属丰度下降而减小，但有很大的弥散。

In connection with the age-metallicity relation, we confirmed the Edvardsson et al's discovery of a substantial dispersion imposed on a weak correlation between age and metallicity; this result is also valid for the age-kinematics relation.

首先，我们的研究进一步证实了Edvardsson等人发现的结果，即在年龄和金属丰度关系中存在相当大的弥散。这种弥散也存在于年龄和动力学关系中。

According to the characteristic of silver nanoparticles, their uniform dispersion in reaction media was obtained by surface modification, ultrasonic radiation and the select of emulsion, and then emulsion polymerization system were formed by combination with reactive monomer and initiator. Nano-Ag/Polystyrene core-shell particles were prepared by emulsion polymerization and their microstructure were characterized by TEM, FTIR, XPS, AFM and TG/DTA. The experimental results showed that silver nanoparticles were coated by polymer and the composite particles had typical core/shell structure, and the microlevel combination was realized. Meantime, the form mechanism of nano-Ag/polystyrene core-shell particles was tentatively researched. The conclusion is that the perfect coating was able to obtained by the control of reaction condition.

根据纳米银粒子的特性，借助于表面处理、超声辐照以及乳化剂的选择，使其均匀分散在反应介质中，再与反应单体、引发剂等形成乳液聚合体系；采用乳液聚合方法、包裹聚合方式，制备出纳米银/聚苯乙烯核壳复合粒子，并借助于TEM、FTIR、 XPS、AFM、TG/DTA等分析手段对复合粒子微观结构进行了表征；结果表明：纳米银粒子表面被聚合物层包覆，复合粒子呈明显的核壳结构，实现了微观尺度上的复合；同时，初步探讨了纳米银/聚苯乙烯核壳复合粒子的形成机理，指出：通过控制反应条件，可以使形成纳米银/聚苯乙烯核壳复合粒子的聚合反应方式占主导地位，实现最大限度地包覆。

No entire nitrendipine crystals were observed visually in SEM photos. The results of X-ray diffraction and differential scanning calorimetry analysis indicated that the crystalline form of nitrendipine was highly dispersed in microspheres, so as amorphous state. The drug release rate of microspheres could be controlled with adjusting the ratio of solid dispersion carriers and retarding agents formulated. The agitation speed and temperature of the preparation process have distinct effect on micromeritic properties of microspheres. The release profiles of the microspheres were mainly affected by the stirring rate of paddle, the concentration of SDS and pH of dissolution medium. Cooling speed and time, however, have no evident influence on the drug release rate of the microspheres. The dissolution data showed that the mechanism of drug release from microsphers was mainly diffusion-controlled. The incorporation efficiencies of 3 batches sample were exceed 96. 8％, which implied that the current method was suitable for design sustained-release dosage form for poorly water-soluble drug.

在扫描电子显微镜下观察，在微球内外未发现尼群地平的完整结晶，X-射线粉末衍射和差示扫描量热试验结果也显示，尼群地平已经被高度分散在微球中；微球的释药速度可通过调整处方中固体分散体载体和阻滞剂的比例控制；制备温度和搅拌速度对微球的质量影响较大；溶出仪的搅拌速度，释放介质的浓度和pH对微球的释放有较大的影响；制备过程中的冷却速度和冷却时间对微球的释放行为影响不很明显；方程拟合的结果表明缓释微球的释药行为符合扩散机制；测定三批微球样品的包封率均在96.8％以上，表明该法适合于制备难溶性药物的缓释微球。

Then the model is modified, considering the effects of irregular entrainment interface on the top of IBL, and applied to fumigation dispersion over Nanticoke coastal area.

然后考虑混合层顶不规则夹卷界面的作用，应用于楠蒂科克沿岸陆上熏烟扩散问题，将模拟的地面轴线浓度与观测资料以及三个熏烟扩散预测模式的结果作了比较。

The horizontal dispersion of suspended particles in the intermediate nepheloid layer at the shelf margin is the major materials transport mode from shelf to the deep sea in the shelf margin.

陆架边缘的雾状层的水平扩散是陆架颗粒物质向深海输送的重要方式。

There are many dispersion research results, but these studies are not systematical and complete, especially the dispersing problem of nanomaterials in nonaqueous media has not been overcome all the time.

尽管目前纳米粉体材料的分散研究已进行了很多，但仍不够系统和完善。特别是纳米粉体材料在非水介质中的分散问题，一直没有突破性的进展。

There are many dispersion research results, but these studies are not systematical and complete, especially the dispersing problem of nanomaterials in nonaqueous media has not been overcome all the time.

随着纳米材料产业化进程的加快，纳米材料的应用研究已成为研究热点。稳定分散技术是纳米粉体材料应用过程中的关键技术之一。尽管目前纳米粉体材料的分散研究已进行了很多，但仍不够系统和完善。

Firstly, achieving a new low and high cycle noninterfering loading, the high frequency induction local heating, the control of high cycle vibration frequency and amplitude, and the crack propagation real-time detection, an experimental system of L-HCCF at elevated temperature is established. Secondly, under two vibration frequency (50Hz and 100Hz), the contrast experiment of light and serious corrosion disc slots is done. It is found that the experimental L-HCCF life of serious corrosion disc is less than that of light's, but its dispersion is larger, and the experimental failure is identical with the service's.

首先，进行大量试验工作，提出了高低周疲劳载荷的新型加载方案，并解决了高频感应局部加温、振动调频及裂纹实时监测等多个技术难点，建立了涡轮盘全尺寸高温复合疲劳试验系统；验证试验做到了故障再现；接着进行了两种频比（振频50HZ与100HZ）的轻、重腐蚀盘的对比试验；由对榫槽第一齿进行裂纹实时跟踪，得出了枞树型榫槽的复合疲劳裂纹扩展特点规律；对榫齿断口进行的金相分析表明：裂纹首先由第一齿开始，断口系复合疲劳；试验结果显示：重腐蚀盘试验寿命较轻腐蚀盘有显著的下降，而且分散性较大。

It has nonreciprocity similar to that of ferromagnet on condition that the external magnetic field is parallel to magnetic lattices, and the dispersion relation of the antiferromagnet has nonreciprocity , too.

通过计算和讨论得到了当外磁场沿x轴方向，原磁晶磁矩沿z轴方向，波矢沿±y轴方向时，反铁磁质表面磁极化激元的极化与铁磁质在平行于磁晶磁矩的外磁场下的极化相类似，具有非对易性，且其色散关系也具有非对易性。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷