This paper took membrane pore density and membrane pore size of UF membrane as membrane structure parameters, adopted a field emission scanning electron microscope (FESEM) to examine membrane structure parameters.
本文以超滤膜的膜孔密度和膜孔径等作为膜结构参数，采用场发射扫描电镜(FESEM)对膜结构参数进行了测定，建立了超滤水处理过程中反映膜结构参数变化的膜结构参数模型，主要以二级处理水为原水，对臭氧氧化、混凝、粉末活性炭(PAC)吸附等不同预处理方法、水质环境条件、膜材料性质、不同操作条件及运行模式(恒流或恒压)等对超滤水处理过程的影响进行了深入系统的研究，并用建立的模型对膜结构参数的变化特征进行了评价。
Although the average cell size was small and cell density was.
当表观密度相同时,升温法得到的平均泡孔直径小,泡孔密度大,但泡孔直径分布不均匀,降压法得到的泡孔直径大、泡孔密度低,但直径分布相对均匀。
Extruded polypropylene foam with low open cell content, high cell density, small and uniform cell size was prepared via blending conventional linear polypropylene with a small amount of high melt strength polypropylene (HMSPP).
通过添加少量高熔体强度的支化聚丙烯,制备了开孔率低、泡孔密度大、泡孔尺寸小、泡孔分布均匀的聚丙烯挤出发泡材料;通过发泡材料断面的SEM分析,比较了成核剂类型和粒径对泡孔密度和尺寸的影响。
The cell size of the composite materials was 10 μm,the cell density was 4.
在室温下用超饱和气体法制备微孔塑料较优的工艺和配方为:I阶段5 MPa和II阶段2 MPa压力各保压30 m in,固化剂含量4%,促进剂含量3%,制备的微孔塑料泡孔直径为10μm,泡孔密度为4。
Influence Ceramic Foam Filter (CFF) with Different Hole Density of on Structures and Properties of ZL204A;
不同孔眼密度的泡沫陶瓷过滤器对ZL204A组织和性能的影响
The lipid contents,specific surface areas and stomata density of two kinds of pine(Cedrus deodar and Pinus thunbergii) needles were determined simultaneously with the levels of polycyclic aromatic hydrocarbons(PAHs).
测定了雪松(Cedrus deodar)和黑松(Pinus thunbergii)松针的脂含量、气孔密度和比表面积等生理性质及松针中多环芳烃(PAHs)浓度,考察了松针生理性质对其富集PAHs行为的影响。
Taking thirty-six varieties of jujube as test material,stomata opens degree,stomata size and stomata density were observed.
以36个枣品种为试材,对其气孔开度、气孔大小、气孔密度进行观察,并分析其叶片气孔特性与裂果性之间的关系。
Through comparison and observation on different kinds of Clivia miniata Regei water-cultivated Seedlings and soil-cultivated seedlings the change of stomata density,stomata size,stomata divergence of the leaves’ lower epidermis in the daytime,the result shows that Water-Cultivated Seedlings’stomata is obviously larger than that of soil-cultivated seedlings.
通过对君子兰(Clivia miniata Regei)不同品种水培苗与土培苗叶片下表皮气孔密度、大小、气孔开度日变化的观察比较,结果表明:水培苗气孔明显比土培苗气孔大。
Stomatal Density of Leaf Layers in Crown of Some Broad-Leaf Species and Effects of Light Conditions on Them
若干阔叶树树冠各层叶气孔密度及光照条件对气孔密度的影响
The stoma density of diploid is thicher than spur type.
二倍体气孔密度大于三倍体，普通型大于短枝型；
A Comparative Study of the Density of Fagus Pashannica Seedlings in Different Habitats;
不同生境的巴山水青冈幼苗气孔密度比较研究
Model of porosity can be established according to density of framework of rock, density of rock and density of fluid in rock.
由骨架密度、体积密度、流体密度联合建立孔隙度解释模型。
corrected density porosity
校正了的密度测井孔隙度
Study on Slender Hole Ultra-precision Measuring System and Precision Analysis;
细长小孔孔径精密测量系统的设计及精度分析
TESTING OF OPEN POROSITY AND COLSED POROSITY OF CARBON MATERIAL BY EFFECTIVE DENSITY METHOD
炭素材料显气孔率和闭孔率的测试──有效密度法
Determination of density and total porosity Mercury displacement method??
密度和总气孔的测定? 汞置换法
The density P is that of the fluid escaping from the orifice.
上式中p是从小孔喷出的流体密度。
clustered high-density shaped charges
成组分布的高密度射孔弹
Preparation and Characterization of γ-Al_2O_3 with Low Bulk Density and Large Pore Volume
低堆密度大孔体积γ-Al_2O_3的制备与表征
Simple method for synthesizing alumina with large pore volume and low apparent density
合成大孔容低密度氧化铝的简单方法
Studies on Stomata Length,Width and Density of Different Provenances of Distylium buxifolium
不同种源小叶蚊母气孔长度、宽度与密度的关系
Coke - determination of true relative density, apparent relative density and porosity
焦炭－－真实相对密度、视在相对密度和孔隙度的测定
Effects of salinities and microalgae densities on filtration rates of scallop Chlamys farreri spats
盐度和饵料密度对栉孔扇贝稚贝滤水率的影响
Uranium dioxide pellets Determination of density and amount of open and closed porosity Boiling water method and penetration immersion method??
二氧化铀芯块? 密度和开口孔及闭口孔的测定? 沸水法和渗透浸没法
Porosity logging interpretation of low-porosity compact sandstone of Upper Triassic Xujiahe Formation in Sichuan Basin,China
四川盆地须家河组低孔致密砂岩孔隙度测井解释研究
Coke--Determination of apparent relative density and total porosity
GB/T4511.3-1984焦炭假相对密度及总气孔率测定方法