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We obtained the accurate refractive index inhomogeneity without system error. At last, in order to resolve the question of the spherometer weared out at the laboratory long-term use, we proposed the method that use the interferometer to adjust the spherometer.

研究了测量光学材料的折射率不均匀性5种方法,建立了四步测量法的数理模型,并且在所研制的CXM100-2W式干涉仪上进行了样品材料的具体测量,在消除了系统误差的情况下,准确的得到了样品材料的折射率不均匀性分布。

While Bi, Al substituted Dy-iron garnet films for magneto-optical recording with Rb-doping not only decreased the crystallized temperature, but also decreased the grains sizes.

用热分解法制备的Bi,Al替DyIG磁光薄膜虽然是纳米晶,但由于其晶界分布不均匀、晶粒较大且均匀性差,当用于磁光记录时,晶界将产生较大的噪音。

It is proposed that nonuniform initial interference value in the structural design would avoid relative displacement generated and ensure uniformity of the contact stress.

建议采用非均匀的初始过盈量,以保证不发生相对位移和接触应力的均匀性。

RESULTS The CT feathures of ossifying fibroma inparanasal sinus were similar to rotundity or unregular single high density lump in sinus, part area of low was expansive growth.

鼻窦内圆形或圆形高密度影,密度均匀或不均匀,部分区域内见低密度影,表面为厚薄不均的骨壳,界限清楚,为骨化纤维瘤的CT表现特点。

Results MRI appearances of acoustic neuromas were:(1)The turmor's growth round the internal auditory canal,the Ⅶ,Ⅷ nerves affected side were thickened than that of opposite side.There was no marked demarcation between the main bodies of the tumors and the affected nerves.The connection between tumors and affected nerves could be showed at contrast enhanced imaging.(2)The tumors were of hypo or isohypo intensity on T1 weighted images and hyper or iso hyper intensity on T2 weighted images.(3)After Gd DTPA administration the tumors were homogeneously or inhomogeneously or circularly enhanced.(4)The margins of the tumors were smooth and well delineated.(5)The affected internal auditory canal usually became shorter in depth and larger in posterior anterior diameter.(6)MRI appearances of micro acoustic neuromas were that the affected Ⅶ,Ⅷ nerves were normal in size or nodularly thickened and the tumor reveaed nodular or point enhancement at contrast enhanced MRI.

结果 听神经瘤的MRI表现主要为:(1)肿瘤以内听道为中心生长,第Ⅶ、Ⅷ神经束较对侧增粗,与肿瘤主体多无明确分界,增强后可见两者相连,颇为特征;(2)肿瘤在T1加权图像上呈低信号、略低信号或低等混合信号,T2加权呈高信号或高等混合信号;(3)注射Gd DTPA后肿瘤呈均匀、不均匀或环状强化;(4)肿瘤边界清晰,边缘光整;(5)绝大多数肿瘤患侧内听道前后径扩大,深径缩短;(6)微小听神经瘤的MRI表现为第Ⅶ、Ⅷ神经束正常或局部结状增粗,造影后呈结节状或点状增强。

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。

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 contribution of water concentration on the growth of carbon nanotubes was investigated. Scanning electron microscopy results showed that the grown CNTs in CH4/H2 gas mixure had chain-shaped structure and the diameter was about 40—90nm. With the addition of proper amount of water, the diameter of CNTs became uniform, and the surfaces of nanotubes were fully covered with nano-sized node-like structures. When more water was added, branched carbon nanotubes were synthesized.

场发射扫描电子显微镜结果表明,不加水时,制备出的碳纳米管直径不均匀,分布在40—90nm之间,呈链节状的结构;加入少量水时,制备出的碳纳米管直径比较均匀,集中在70nm左右,表面为瘤状结构;当水的流量进一步增加时,得到的碳纳米管表面光滑,出现了枝状结构。

Thin elastic foundation of cement concrete pavement design theory, in-depth analysis is to arrive at the grass-roots non-uniform bearing broken concrete pavement panels, gnawing edge, the wrong units, as well as the main reason for structural damage produced by taking certain measures to improve the concrete between the road surface and the grass-roots support conditions, and improve durability of the cement concrete pavement and stability.

面层与基层之间存在脱空现象和不均匀支承的状况,致使水泥混凝土路面的承载力下降。通过水泥混凝土路面弹性地基薄板的设计理论,深入分析得出基层的不均匀支承是水泥混凝土路面断板、啃边、错台、以及产生结构性破坏的主要原因,通过采取一定措施改善砼路面面层与基层之间支撑条件,提高了水泥混凝土路面的耐久性和稳定性。

Thin elastic foundation of cement concrete pavement design theory, in-depth analysis is to arrive at the grass-roots non-uniform bearing broken concrete pavement panels, gnawing edge, the wrong units, as well as the main reason for structural damage produced by taking certain measures to improve the concrete between the road surface and the grass-roots support conditions, and improve durability of the cement concrete pavement and stability.

面层与基层之间存在脱空现象和不均匀支承的状况,致使水泥混凝土路面的承载力下降。期刊文章分类查询,尽在期刊图书馆通过水泥混凝土路面弹性地基薄板的设计理论,深入分析得出基层的不均匀支承是水泥混凝土路面断板、啃边、错台、以及产生结构性破坏的主要原因,通过采取一定措施改善砼路面面层与基层之间支撑条件,提高了水泥混凝土路面的耐久性和稳定性。

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Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势,并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。

This dramatic range, steeper than the Himalayas, is the upturned rim of the eastern edge of Tibet, a plateau that has risen to 5 km in response to the slow but un stoppable collision of India with Asia that began about 55 million years ago and which continues unabated today.

这一引人注目的地域范围,比喜马拉雅山更加陡峭,是处于西藏东部边缘的朝上翻的边框地带。响应启始于约5500万年前的、缓慢的但却不可阻挡的印度与亚洲地壳板块碰撞,高原已上升至五千米,这种碰撞持续至今,毫无衰退。