均匀分布

Results: MRI features of primary malignant lymphoma were as follows:①single or multiple lesions, mostly in supratentorial region;②round or irregular in shape, hypointense on T1WI, hypointense or isointense on T2WI with homogenous signal;③mild edema around the lesion with mild space occupying effect;④remarkable enhancement of the lesion;⑤involvement of leptomeninges and/or dissemination via ventricular ependyma;⑥sensitive to chemotherapy and radiotherapy. Size and shape changed remarkedly after treatment.

结果：脑内淋巴瘤MRI表现为：①肿瘤单发或多发，以幕上分布为主；②形态圆形或不规则形， T1WI呈低信号， T2WI以高信号为主，信号不均匀；③瘤周水肿及占位效应较轻；④增强扫描肿瘤明显不均匀强化；⑤可侵及软脑膜、室管膜并沿之播散；⑥肿瘤对放疗和化疗敏感；形态、大小变化明显。

The results show that, by the way of optimizing preparation condition, the spherical zirconia powders with suitable particle size distribution are prepared using chemical precipitation method. Using heterogeneous chemical precipitation coating technique, the sph, erical nickel coated zirconia powders are prepared and the heterogeneous nucleation can be done on the surface of spherical zirconia powders. The thickness of coated layer, homogeneous degree and crack of surface can be controlled by the way of controlling powder concentration, adding rate of reactants feeding and adding surface active agent.

研究表明，采用化学沉淀法，通过优化制备工艺条件，可以制备粒径分布较均匀的球形氧化锆粉体；利用非均相化学沉淀包裹技术制备的金属镍包裹氧化锆微球粉体，球形氧化锆颗粒表面作为异相成核的场所，通过控制颗粒浓度、加料速度以及添加表面活性剂等工艺条件，可以调控包裹层厚度、表面均匀度以及表面裂纹等。

The results showed the distribution of PH_3 was uniform,and the rate of low-concentration to high-concentration was higher than 0.83;gastightness was well during fumigation,the lowering rate of mean concentration was 4.5%/d.The mortality of st...

试验结果表明PH3浓度分布均匀，均匀度大于0.83；熏蒸期间气密性较好，平均浓度下降率为4.5%/d；熏蒸28天后散气，杀虫效果良好，粮堆内储粮害虫死亡率达到100%。

The hole diameter differences of various and sections in Wang 80?3 well in Jianghan Oil Field have been measured.With the help of finite element method and model recognization theory,association of time and gypseous salt creep deformation,the strain distribution of casings_heterogeneous and homogeneous loads,the effects of manufacturing defects on casing stress and the cement...

借助模型辨识理论及运用有限元方法，研究了盐膏层蠕变与时间的关系、套管在均匀及非均匀载荷作用下的应力分布、套管制造缺陷对套管应力的影响以及水泥环对套管的保护作用等，所得结果为工程实际应用提供了定量的参考依据，具有很好的推广应用价值。

The results showed that there were significant differences among parameters of texture feature of the different land utilization. In the desertification, the mean and variance were comparatively high. The gray level was asymmetry, the contrasts between neighboring pixels were significant; while in water and irrigable land, the mean, variance was a little bit low, the grey level was symmetry; the mean, variance and gray level in the forest and dry land was between the above (desertification and water and irrigable land).

不同土地利用类型之间纹理特征参数差异明显，荒漠化土地的均值、方差值较高，灰度分布不均匀，相邻像元反差明显，内部变化剧烈；水体和灌溉耕地的均值、方差值很低，灰度值均匀，内部变化小；林地和旱耕地信息介于上述两类土地之间。

The experimental results show that the SOM method can get the best result for lesion recognition, the recognition rate of pork tissue and liver tissue are 96.1% and 91.7%, respectively. The recognition rate for PCA-LDA method is lower than that of SOM method because the feature of tissue lesion is linear indivisible.An effective clinic scheme is developed for NETE, and some problems are discussed. For example, nonuniform temperature field conduced by nonuniform energy field; tissue database construction; movement of HIFU transducer with ultrasonic transducer; rectification of HIFU parameters.

临床方案做了总体设计，并讨论了在临床应用中需要考虑的一些问题，如因HIFU辐射能量分布不均匀导致的焦域的温度场不均匀的问题，数据库的建立问题，HIFU换能器和超声探头的位移的问题以及HIFU辐射参数的确定问题等。

The results indicate that Pt-based alloys appear circular shape and distributehomogeneously on the carbon, the particle size is homogeneous and about 2～4nm. The crystalline form is platinic face-centered cubic and most of crystalplane is Pt(111), the doped metal elements dont form simple substance and existas Pt-M alloy formation.

研究表明，制备的Pt基合金微粒基本呈圆形，金属颗粒在活性炭表面上分布均匀，粒径也较为均匀，粒径范围约2～4 nm，晶型结构仍以Pt面心立方晶系存在，晶面以Pt(111)居多，掺杂的元素原子未单独形成单质颗粒，而是以Pt-M合金的形式存在。

It is shown that, in the optimum condition range, the surface of Si 3N 4 coated uniformly by Al 3 and zeta pote...

结果表明：在最佳包覆工艺范围内，Si3N4 粉末表面均匀包覆一层Al3 ，并包覆后Si3N4 浆料的zeta 电位发生明显变化，粒度分布更加均匀，流变性能得到明显改善。

Therefore, with regards to the cases of the application to the streaming media on the demand of the real time quality and the contradiction of the inadequate bandwidth of the present Internet, the article analyzes the unbalance QoS controling strategies from the viewpoint of the predistribution of bandwidth, the streaming dispatching, the handling of the data losing, and the processing mistakes and so forth, taking advantages of the unbalance on the distriution importance of the streaming media data, to guarantee the real time of the important data.

为此，针对流媒体应用的实时性要求和当前Internet带宽不足的矛盾，本文利用流媒体数据中重要性分布的非均匀，从带宽预分配、流调度、丢包处理、错误处理等多方面进行非均匀的QoS控制策略，保证重要数据的实时性。

Investigating the influences of processing parameters on the C/Si molar ratio of resulted nanosized SiC powders indicated that there was a direct pyrolytic reaction from DMS to SiC as well as the previous proposed two-step reaction. Under the optimized processing conditions, the silicon carbide powders of homogeneous particle size distribution, spherical shape and stoichiometrical C/Si molar ratio are obtained. The silicon carbide particle consists of β-SiC crystallite arranged randomly.

论文系统研究了工艺条件对产物粉体C／Si摩尔比、粉体颗粒尺寸和组成粉体的SiC微晶尺寸的影响；研究了粉体制备过程中可能发生的化学反应，提出了反应过程中除了分步进行的生成SiC的反应外，同时在高温区还存在一步完成的生成SiC的化学反应的观点；通过调整工艺参数，制备得到了粉体尺寸分布均匀、呈均匀球状、C／Si摩尔比符合化学计量比的颗粒尺寸为40nm的纳米SiC粉体。

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。