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It is found that organic nanotubes from keto-enol isomeric dibenzoylmethane with different diameters show unique size dependent properties according to our experimental and calculated results. With the diameters of the nanotubes decreasing, the enol isomers of DBM molecules increased, the intensity of the fluorescence emission enhanced.

制备了平面稠环分子苝的纳米管，发现纳米管的形成机制源于模板孔洞的高长径比及溶液在高表面能基体上的自发铺展过程，苝层层沉积从而形成纳米管，苝分子头对尾的聚集体是形成纳米管的主要成份。

The results revealed that marrow cells were younger, the diameters were larger. During erythrogenisis, the degree of decreased diameters became large. This phenominia was more apparent at the mature peried of mediate erythroblast or late erythroblast.

结果提示：灰尾兔骨髓内愈幼稚的细胞直径愈大，在成熟过程中直径变小的幅度逐渐加快，此现象在中幼红细胞发育成晚幼红细胞时最为明显。

The class one which was expressed by diameters of pore maximum inscribed circle was adapted and a new distribution model expressed by diameters of pore area equivalent circle modified with fiber thickness was presented.

以几何概率和平面随机分割理论为依据，分析了非织造布中孔隙结构的分布模型，将经典的以内按圆直径表示的有效孔径分布模型改为以面积等效圆直径表示的有效孔径分布模型，并结合纤维细度进行修正，实验证明，该模型更符合实际情况。

Firstly, we normalized the basic voxel by constructing its minimum oriented bounding box. Secondly, we constructed its D2 shape distribution curve, and computed the values of EMD(earth mover's distance) compared with the corresponding curves of the normal cone and cylinder respectively, and the corresponding top diameters. Finally, we compared the top diameters and obtained the parameters by the bounding box.

首先建立基本体素的MOBB，对体素进行标准化；然后生成其D2形状分布曲线，计算此曲线分别与标准圆锥体形状分布曲线、标准圆柱体形状分布曲线的EMD(earth mover's distance)值以及相应的上底直径；最后通过比较两个上底直径的大小来判断此体素是否为圆台体，并由包围盒的边长给出圆台体的参数。

The penetration tests are carried out by the semi-armor-piercing bullets with the diameters of 57 mm and earth penetrator with the diameters of 80 mm.

利用弹径分别为57与80mm的半穿甲弹与钻地弹进行侵彻试验，2种实弹的着靶速度分别为300~600与

To ensure accuracy of measurement, the CSM-91 should be located at least five pipe diameters down stream from any fitting and at least ten pipe diameters downstream from a pump.

为了保证测量的准确性，系列CSM-91应该放置在距离任何连接件下游至少五倍管道直径长度的地方，和泵下游至少十倍管道直径长度的地方。

Each paper-transferred wheal was scanned with an ordinary scanner, and its surface-corresponding maximum perpendicular diameters and longest diameters were measured using a computer software application for image recognition, developed for this purpose.

患者与方法：对吸入过敏原产生可疑过敏反应的患者采用Pan-European GA(2)LEN SPT 进行皮肤针刺试验。15分钟后，用笔标记出肉眼观察风团和潮红反应，同时使用透明胶带将风团大小转到纸上。

Meanwhile, result comes out that seven fossil samples are mostly evergreen Araucarioxylon, deciduous species prapably exists, but their fixed numbers of growing year are extraordinarily variant; Analysis of ariance indicates that, imposing ray cells, radial tracheid diameters-, the ratios of ray cells to radial tracheid diameters on distinguishing seven samples is doable as a whole, while not fitting for individuals.

经方差分析可以看出，利用射线直径、管胞直径和射线管胞比可以在总体上区分各标本，但对个别样本不适用；射线高度这一性状在各标本间差别很小，不能区分；结果认为：标本2和标本6的性状最相近，为相同的种类；标本1、4、7可能为同一属；对方差和CSDM曲线的综合分析认为，标本1、3、6的生长年限存在一定的区别，可能导致在方差分析上出现些许误差。

The results show that the radiative properties of randomly distributed soot aggregates for a given fractal dimension are complex functions of the monomer diameters, the number of monomers in the aggregates,and the refractive index; For a small value of the monomer diameters, the absorption cross section of soot aggregates tends to be relatively constant when the fractal dimension is small but increases rapidly when the fractal dimension exceeds two. However, a monotonical reduction in light absorption with the increase of the fractal dimension is observed for soot aggregates with sufficiently large monomer diameters, number of monomers,and refractive index. The scattering cross section , extinction cross section and single-scattering albedo increase monotonically with the increase of the fractal dimension. Overall, the results for soot aggregates differ profoundly from those calculated for the equivalent spherical particles, and the discrepancies between them will change small with the increase of the fractal dimension.

研究表明，在给定分形维数的情况下，烟尘団簇粒子的辐射特性取决于原始微粒粒径、数量及复折射率；原始微粒较小的団簇粒子，当分形维数较小时，吸收截面变化不明显，但当分形维数大于二时，吸收截面骤然增大，然而，对于具有比较大的原始微粒粒径、数量及复折射率的烟尘団簇粒子，吸收截面随着分形维数的增大而单调递减；随着分形维数的增大，団簇粒子的散射截面、消光截面及单次散射反照率均单调递增；从整体上来讲，団簇粒子的辐射特性与等效球形粒子的辐射特性存在着比较大的差别，并且这种差别随着分形维数的增大而减小。

And the exothermic covering flux addition amount dependence of riser diameters, the equivalent modulus dependence of riser diameters and the casting weight dependence of riser diameters have been obtained.

研究得出了发热覆盖剂加入量与保温冒口直径的关系，保温冒口的等效模数，以及根据铸件质量选择冒口直径的图表。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。