查询词典 diameter

In this thesis, we shall study the isomorphism property of chordal ring networks and we shall find out the diameter of some directed chordal ring networks and the diameter of some mixed chordal ring networks.

在这篇论文里，我们首先推导「有向的弦环式网路」以及「混合的弦环式网路」的同构性质；我们接著得出某些特殊的「有向的弦环式网路」以及「混合的弦环式网路」的直径，与之前文献不同的是，我们并不需要先计算出对应的「双环式网路」的直径来得出这些直径。

Zeta potential,density of surface carboxyl groups,the interaction between carboxyl groups and component in copolymerization emulsion,mechanical properties of films,state of water,particle diameter and distribution of particle diameter and theological behavior of emulsion were investigated by Zeta meter,the conductometric titration, particle size apparatus,dynamic mechanics analysis,differential scanning calorimmetry,scanning electron microscope,rheological apparatus,respectively, to study the mechanism on the water resistance of modified PVAc emulsion.

利用Zeta电位仪、电导滴定法、激光粒度仪、DMA、DSC、SEM、流变仪等手段从Zeta电位、表面羧基密度、羧基和乳液组分中的相互作用、羧酸改性后胶膜的力学性能、水的存在状态、粒径分布、流变性能和微观形貌方面探索了羧基提高乳液耐水性的机理。

In the case of 10% reflectivity, less than 3.7ns with 8.6:1 pulse-compression ratio has been observed. As our acknowledgement, that is the first reported.In addition, a new type of phase conjugator using tapered fiber is designed, which combined the higher reflectivity of small core-diameter fiber and higher damage threshold of large core-diameter fiber.

为了获得更高的能量反射率和稳定性，我们自行设计了一种新型的锥度光纤，并应用于LD泵浦的双通放大DPL系统中；实验表明：应用锥度光纤相位共轭器可以获得高达85％的能量反射率和90％的相对稳定度。

Study of applicability of small-diameter tube used for chemical injection operation;2. The study on the experiment of wall thickness deformation of coreless bended small-diameter tube

针对电潜泵在小直径套管中遇卡打捞的复杂性，提出了打捞的难度、风险和工艺措施，通过现场两口井的应用，打捞一次成功。

This paper put forward a kind of optimization method based on genetic algorithms for bidirectional flow laterals diameter on sloping field. This method could get the optimal diameter and control criterion of irrigated quality such as average flow and uniformity. Meanwhile, the running control parameter such as the optimum crotched position and intake pressure of laterals could be determined.

提出了一种基于遗传算法的坡地双向毛管管径的优化方法，能获得毛管最优管径和灌水器平均流量、灌水均匀度等灌水质量控制指标，同时能确定毛管最佳分流点位置和毛管进口压力等运行控制参数。

The growth inhibiting rate of T24 cell lines were detected by MTT methods, apoptosis of cells were detected by flow cytometry, the mechanism of apoptosis was analyzed by detecting the protein expression of Bcl-2, Bax, Caspase-9, Caspase-3 and cytoplastic protein Cytochrome C. 4 We injected live T24 cells into the subcutaneous space of nude mice and successfully built up the animal model of bladder carcinoma. The effect of CS-PAA-EPI polymer magnetic microspheres targeting chemotherapy was investigated by HE staining, TUNEL ,tumor weight and volume inhibition rate. Results: 1 TEM revealed that the CS-PAA polymer magnetic microspheres were regular spherical shape,the average diameter was 80nm in dry condition. By controlling the pH value of the medium,polymers had positive or negative zeta potential. VSM showed the CS-PAA polymer magnetic microspheres had superparamagnetic. The diameter of CS-PAA-EPI polymer magnetic microspheres were 200nm in solution by DLS examining,the embedding ratio was 20%,the EPI loading rate was 15%, which was higer than reported in other articles. 2 Raw eye observation found that the rat"s bladder of treatment group was brown color,which meaned the aggregation of iron particles, compared with the control group, iron stain found iron particles were assembled in rat"s bladder of the treatment group, the amount of iron particles in liver and spleen were less obviously.

研究结果：1合成的CS-PAA磁性聚合物微球呈球形，大小均一，TEM测定其干态下粒径为80nm左右，磁化曲线证实具有超顺磁性，具有一定的PH敏感性，固载表柔比星后，水溶液性状稳定，无沉淀物，DLS测定直径约200nm左右，测定载药率为15％，较文献报道高，包封率为20％。2肉眼观察试验组大鼠膀胱表面呈褐色，可见大量的Fe粒子聚集，普鲁士兰染色法显示，试验组大鼠膀胱壁内有大量的Fe粒子，分布至膀胱壁全层，与对照组大鼠相比，试验组大鼠的肝、脾内的Fe粒子聚集量明显降低；HPLC测定结果与Fe染色相同；高剂量磁性CS-PAA-EPI生理盐水组及单纯EPI生理盐水组均在给药后14天出现血肌酐和尿素氮的升高，其他组大鼠血生化指标没有明显变化。3MTT法发现，高、中、低剂量磁性CS-PAA-EPI生理盐水组在外加磁场的协同作用下杀伤T24细胞效应明显高于单纯的EPI生理盐水组，FCM发现试验药物组可引起明显的肿瘤细胞凋亡，试验药物治疗组细胞胞浆内出现了由线粒体释放出的细胞色素C，试验组细胞Bcl-2蛋白减少，Bax蛋白变化不明显，Caspase-3、Caspase-9蛋白受到了激活活化。4高、中、低剂量磁性CS-PAA-EPI生理盐水组的瘤重抑制率和瘤体积抑制率均明显高于单纯的EPI生理盐水组(P＜0.01)，其中高剂量组的抑制率最高。

In the generation of a face gear by a shaper, there is the possibility of undercutting in the dedendum area of inner diameter and the pointing of the teeth in the addendun area of outer diameter.

在面齿轮的加工中，面齿轮在内径处易产生根切，而在外径处易产生齿顶变尖现象，因此面齿轮的齿宽受到了限制。

The impacts on the diameter levels V and VI were indicated as abnormal increase of survivorship, negative values of mortality and decrease of mean life expectance whereas the impacts on the diameter levels III and IV were opposite to the levels V and VI. The survivorship curve of the Quercus variabilis population was fit with Deevey II.

静态生命表分析较好地反映出栓皮栎种群生长历史中的消长过程，清楚地透视出20年前坑木择伐对种群动态的长期影响，即径级V和VI（直径8~12 cm）存活株数异常增加、存活率提高、死亡数和死亡率出现负值以及平均期望寿命降低；而相应地对径级III 和IV带来与径级V 和VI相反的作用。

The results showed that:(1) the upper elevation limit of the closed forests was found to be 4320 m; the timberline elevations was 4520 m on the sunny side with a gradualtype;(2) for the diameter class structure of the populations, most individuals were from Ⅰto Ⅳ, the number decreased sharply with the increase of diameter class, the survival curves were between Deevey type Ⅰ and Ⅱ, with an approximately stalbe trend; the variation trends of mortality rate q(subscript x and hazard ratek(subscript x were similar;(3)the analysis by time sequence model demonstrated that the individuals of the older age class would be increasing, indicating that S.

死亡率q(下标 x和消失率k(下标 x变化基本趋势一致；都在Ⅲ龄级出现低谷；以后死亡率和消失率曲线均随龄级增加而上升；时间序列分析表明；未来种群发展老龄个体逐渐增多。

We prepared the ordered porous alumina membrane by a two-step anodization method in oxalic or sulfuric acids, which is a self-ordered hexagonal array of cells with an adjustable pore diameter of 20-150nm and a different pore structures (i.e. Y-branched, dendriform, toothed and torous ones). Furthermore, the template-electrodeposition, vapor-catalytic growth, and controlled chemical etching were developed for well-aligned carbon nanotubes and oxide nanopillars with adjustable diameter, Al2O3-AlN one-dimensional heterojunction, Y-junction and dendriform metal nanowires, as well as Y-junction, and torous carbon nanotubes. The resultant one-dimensional junctions were characterized by XRD, SEM, TEM,HRTEM, and STM, and the field emission of the well-aligned carbon nanotubes and the luminescence of ZnO nanopillar array have also been mearsured.

完善和发展了阳极腐蚀法制备多孔氧化铝膜的方法，制备出了孔径在20-150nm之间可调和具有不同孔结构（如Y形、树枝状、锯齿状）的系列多孔氧化铝模板，在此基础上，利用电化学沉积、气相催化生长和化学控制腐蚀等方法，成功地生长出具有可调直径的碳纳米管和氧化物纳米柱有序阵列、Al2O3-AlN异质结纳米线、Y形和树枝状的金属纳米线以及Y形、藕节形和锯齿形的碳纳米管等多种一维结纳米材料及其阵列体系，探索了基于模板孔壁内沿生长一维结纳米材料的机制，较系统的研究了碳纳米管阵列的场发射性能和氧化锌纳米柱的发光性能，为低维纳米材料器件化提供了实验基础。

There are different types of personal loans available.

有许多不同类型的个人贷款优惠。

The above mentioned teaching model of spiral rising can be used to avoid rigidness in teaching.

上述螺旋式上升的教学模式，可以避免教学形成模式後的僵化现象。