不均匀

Statistic analysis to the mechanism and failure of bleed out caused by broken corner is made, and the result shows that the main reason of bleed out caused by broken corner is the inhomogeneity of the shell of crystallization and the inhomogeneity of the secondary cooling system which are caused by the processing parameter in the inside of copper pipe and the wear-out in the corner during the service.

对角裂漏钢机理及现场角裂漏钢事故进行统计分析，认为造成角裂漏钢的主要原因是铜管内腔的工艺参数及使用过程的角部磨损造成的出结晶器坯壳不均匀和二冷系统冷却的不均匀性。

Results:Most of the intracranial chordoma（16 cases in our group,88 9%）were located in the middle area of the skull base such as clivus and/or sellar region and always invaded extensively the nerves and major in tracranial vessels of skull base.All tumors were hypointense on T1- weighted imaging and heterogeneous hyperintense on T2- weighted imaging,On Gd- DTPA contrast- enhanced T1- weighted imaging 8 chordomas enhanced more markedly,but steady heterogeneous.

结果：颅内脊索瘤大部分（本组16例，占889%）发生于颅底中线处的斜坡和/或鞍区，并广泛侵犯颅底的神经和大血管等重要结构；在T1加权像上肿瘤主要表现为低信号，T2加权像上表现为不均匀高信号，Gd-DTPA静脉注射增强后（8例）均出现较明显的不均匀强化。

Results: MRI features of primary malignant lymphoma were as follows:① single or multiple lesions, mostly in supratentorial region;② round or irregular in shape, hypointense on T1WI, hypointense or isointense on T2WI with homogenous signal;③ mild edema around the lesion with mild space occupying effect;④ remarkab1e enhancement of the lesion;⑤ involvement of leptomeninges and/or dissemination via ventricular ependyma;⑥ sensitive to chemotherapy and radiotherapy. Size and shape changed remarkedly after treatment.

结果：脑内淋巴瘤MRI表现为：①种瘤单发或多发，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。

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。

For morphosis,young stage multifidus MRI charactered as full shape,evenness and regular outline,uniformity low signal,intramuscular spatia being revealed none or as single line,puncta form;however,old stage multifidus MRI charactered as atrophy shape,introcession outline,heterogeneity higher signal,intramuscularly spatial being revealed as multiple line-lamellar form or featheriness or grid form.

在形态结构方面，年轻组多裂肌表现为形态饱满、轮廓平整、均匀低信号、肌内间隙不显示或呈单个线状或点状显示；老年组多裂肌表现为形态萎缩、轮廓凹陷、信号不均匀性增高、肌内间隙呈多发线片状、羽毛状或网格状显示。

Non-uniform illumination may cause wrong segmentation in the threshold segmentation of image. To overcome the above problem, a novel irradiant compensation algorithm for image segmentation is presented.

针对受到光照不均匀影响的图片在直接进行阈值分割造成的错分割问题，提出了在分割前对图像进行光照补偿的预处理，从而降低光照不均匀对阈值分割造成的不利影响。

In order to further understand the organization and performance of the product extruded from beryllium bronze,the nonuniformity of ingot casting organization extruded from beryllium bronze,the quenching macrocrystalline ring organization and layer structure of extrusion bars,the nonuniformity in mechanics,and extrusion effects were analyzed.

为了进一步了解铍青铜正向挤压制品的组织和性能，分析了铍青铜挤压铸锭组织的不均匀性、挤压棒材淬火后的粗晶环组织、以及挤压棒材的层状组织；同时对挤压棒材力学性能的不均匀性和挤压效应进行了分析。

Based on the review of the description of subtropical high and the research on its formation, fluctuation characteristics and physical mechanisms, it is found that the subtropical high is refered to the area where pressure is relatively larger. Its formation is due to the existence of mean meridional circulation that accumulates air mass to subtropical areas. The subtropical high is belt-like with meridionally non-uniform feature and this is a zonal mean point of view.

通过对副高的描述、形成及演变特征和物理机理的研究进行回顾，认为：副高是相对的气压的高值，是由于平均经圈环流的存在，使得有空气质量在副热带地区的堆积而形成的，成为带状，表现出在经度方向的不均匀，这是一种纬向平均的观点；同时，在这个平均的高压带上常常有闭合的单体存在，表现出纬向的不均匀。

The method of eliminating misproportion of gray level in different surface direction of the object is proposed.

图像中由于被摄物体表面法线方向不同和反射率不同将造成所摄影像灰度的不均匀，本文采用背景图像和编码图像两幅图像相除运算的方法基本消除了灰度不均匀现象。

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。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。