粒度测定的

The particle size and distribution were determined by transmission electron microscopy and laser particle size distribution analyzer, ultraviolet-visible absorption curve was also characterized.

通过透射电镜、激光粒度分布仪等测定了纳米颗粒的粒径和分布情况，并对纳米金溶胶的紫外可见吸收曲线进行了研究。

In this thesis,the changes of the circulation-time according to different size particles of the broad size coarse carbamide particles were studied.

本文选用宽粒度分布大颗粒尿素物料，在带导流管的喷动流化床中，测定了在不同操作参数条件下，不同粒径粒子的平均循环时间。

The physical and chemical characteristics of two types of fly ashes collected from two municipal solid waste incinerators, including density, particle size distribution, fusibility property, composition and crystalloid structure, have been studied in detail.

应用激光粒度粒形分析仪、灰熔融性测定仪、原子吸收光谱仪和XRD等仪器手段对国内2种垃圾焚烧飞灰的密度、颗粒特性、熔点、成分和晶相结构等物理化学性质进行了详细的研究。

Thi s method can detect the edge of the raw material globule effectively.

本文基于计算机图象识别技术，提出一种在线测定生料球粒度的新方法，解决了料球图象识别的关键问题――料球的边缘检测。

And metallography analysis system was adopted to test the crystalline phase content.

用直接压痕法测量烧结样品的断裂韧性，运用金相图像分析系统进行晶相含量的测定，重点研究粉体粒度和晶相含量对长石瓷断裂韧性的影响。

Then the samples obtained were determined by bulk density, specific surface area, pore volume, particle size and TEM.

制备的纳米二氧化硅样品进行了堆积密度、比表面积、孔容积和粒度以及TEM的测定。

Methods According to riddling gravel, the specific property of the rock was analyzed with the microscope.

方法根据筛选粒度分析，在显微镜下测定岩石的岩性

The settling velocities of galena,titanomagnetite and pyrite in the froth layers are determined,and the effects of the particle size and the surface hydrophobicity on the settling velocity in the froth layers are investigated.

试验测定方铅矿、钛磁铁矿、黄铁矿颗粒在泡沫层中的沉降速度，分析研究粒度及表面疏水性对颗粒在泡沫层中沉降速度的影响。

Zinc sulfide nanoparticles with different sizes were synthesized by a unique precipitate dissolution method using zinc alkyl xanthate and sodium sulfide as zinc and sulfur sources, respectively. The samples synthesized were characterized by low temperature nitrogen adsorption and desorption, Transmission Electron Microscope, powder X-ray Diffraction and Fourier Transform Infrared Spectroscopy techniques.

以烷基黄原酸锌和硫化钠分别为锌源和硫源，采用烷基黄原酸锌沉淀溶解法制备了粒度可调、粒径分布比较窄的面心硫化锌纳米粒子，利用比表面积测定、透射电镜、粉末X射线衍射、傅里叶转换红外光谱等方法对合成的硫化锌纳米粒子进行了表征。

The effect of the size of particulates and pressing pressure on porosity ratio has been studied.

对 Al2 O3颗粒预制体的气孔率测定方法进行了探讨，研究了颗粒粒度与压制压力对气孔率的影响。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。