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1)  Hole Density
孔眼密度
1.
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
2)  Membrane pore density
膜孔密度
1.
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。
3)  cell density
泡孔密度
1.
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。
2.
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。
3.
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。
4)  perforating density
射孔密度
5)  stomata density
气孔密度
1.
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。
2.
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。
3.
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。
6)  stoma density
气孔密度
1.
The changes of water-use efficiency and stoma density of Leymus chinensis along Northeast China Transect;
中国东北样带关键种羊草水分利用效率与气孔密度
2.
The leaf characters of stoma density, chlorophyll content, leaf shape and leaf pasture of garlic germplasm introduced from different part of China were studied.
对引自我国不同地区的大蒜品种气孔密度、叶绿素含量及叶形和叶的空间姿态等叶部性状研究结果表明,不同部位叶及同一叶的不同部位表皮气孔密度不同,品种间叶绿素含量范围在0。
3.
It was found that each species had a special stoma density,and the stoma types were different between Angiopteris fokiensis Hieron and Archangiopteris henryi Christ et Gies,which could be considered as key characters to the genera and species of Angiopteridaceae.
通过在光镜下对云南境内12种莲座蕨科植物的叶表皮细胞进行观察研究,发现:①气孔类型可作为莲座蕨属和原始莲座蕨属分类依据;②气孔密度可作为分种依据。
补充资料:非密度制约因素(见密度制约因素)


非密度制约因素(见密度制约因素)


  l焦非密度制约因素见生态因素、密度制约后
  
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