查询词典 R.R.

In this article, the effect on the surface topography of the same material was analyzed by different processing methods, the value of surface parameter arithmetic mean R, root-mean-square roughness R and gradient root-mean-square value Z were used to appreciate the surface topography, and the data were processed with the software Matlab.

分析不同加工方法对同一种材料表面形貌的影响，采用表面形貌统计参数中的轮廓高度算术平均值R、轮廓高度均方根值R、坡度均方根值Z，对表面形貌进行评价，结果表明，准分子激光加工表面的R、R，和Z，值均比研磨加工表面小。

Shortly after the 1931 competition, an R engine using a special fuel blend powered the winning Supermarine S.6B aircraft to a new airspeed record of over 400 miles per hour (640 km/h). Continuing through the 1930s, both new and used R engines were used to achieve various land and water speed records by such racing personalities as Sir Henry Segrave, Sir Malcolm Campbell, and his son Donald; the last record was set in 1939.A 1951 R-powered water speed record attempt by Donald Campbell was unsuccessful.

在1931年比赛后不久，一台"R"发动机在使用一种特别的混合燃料做动力的情况下，使得一架获胜的休泼马林公司的S.6B飞机飞出了超过400英里1小时(640 km/h)的新记录，在随后的30年代里，崭新的和使用过的"R"发动机在亨利·西格雷夫，坎贝尔·马尔科姆爵士及他的儿子唐纳德·马尔科姆这些竞赛名人的手中创造了一系列的陆地及水面速度记录，最好记录于1939年创造，1951年唐纳德·马尔科姆尝试刷新R发动机载动的水上速度记录但没有成功。

An analysis revealed very significant positive correlation between trophozoite area and nucleus area (r=0.54, P .01), trophozoite volume and nucleus volume(r=0.47, P .01), and negative correlation between trophozoite area and trophozoite roundness (r=-0.29, P .01), no significant correlation between nucleus roundness and trophozoite roundness.

相关分析显示滋养体与核的面积(r=0 。5 4 ，P 。0 1)、滋养体与核体积(r=0 。4 7，P 。0 1)相关性有显著性意义，滋养体面积和核圆度呈负相关(r=- 0 。2 9，P 。0 1)，滋养体圆度和核圆度之间无相关性。

The absorption band at 2240 A discovered by Stucklen in an underwater spark does not agree with the band observed by Hulthen and Zumstein in a high temperature oven and later studied by Grundstrom. The important difference lies in the complete lacking of the R-branch lines in Stucklen's band. New experimental investigation led to the discovery of the unfound R-branch lines. This is a strong evidence that the bands are actually the same.

Stcklen氏发现用铜极在水中生火花有一吸收光带位於2240A区域此光带与Hulthen氏及Zumstein氏及Grund-strom氏在高温度炉中用铜之蒸气加以氢气所得之吸收光带(亦在2240A附近)不能一致最大之分别在Stucklen之光带全无R支谱线新实验工作发现R支谱线之存在得R(0)至R(13)之十四根线确实证明Stucklen之光带并非另一新带。

The color component of ir was the best for close operation while the other two color component (r+g and r+g+ir) would do a better performance on open operation. Finally, the results of these 3 color components for recognizing weed showed that ir was the best. So, as a conclusion, the color component of ir is best for recognizing weed based on computer vision. Also the operation process for recognizing weed was proposed.6. Supposed an idea on the variable spray mechanism of weedicide.

借助Matlab7.0.1软件对数值量ir和数值组合r+g、r+g+ir进行进一步的分析，在对ir、r+g、r+g+ir图像完成为了去除图像噪声而进行的中值滤波和二值化背景分割后，为消除特定图像细节进行二值形态学操作，通过分别对三个数值量和数值组合的开启和闭合操作结果的比较，发现处理后的数值量ir适合进行闭合操

The most aldermanic,with his chin upon a heart-leaf, which serves for a napkin to his drooling chaps, under this northern shore quaffs a deep draught of the once scorned water, and passes round the cup with the ejaculation tr-r-r-oonk, tr-r-r——oonk, tr-r-r-oonk!

当最高头儿的青蛙，下巴放在一张心形的叶子上，好像在垂涎的嘴巴下面挂了食巾，在北岸下喝了一口以前轻视的水酒，把酒杯传递过去，同时发出了托尔——尔——尔——龙克，托尔——尔——尔——龙克，托尔——尔——尔——龙克！

New sulfonyloxadiazolones have the formula, in which A stands for hydrogen, sulphur,-SO-,-SO2- or a group, in which R stands for hydrogen or alkyl; R stands for optionally substituted cycloalkyl, cycloalkenyl or aryl; and R stands for optionally substituted alkyl, alkenyl, dialkylamino or aryl.

本发明涉及式新的磺酰基__二唑酮，其中，A代表氧、硫、－SO－、－SO 2 －或基团，其中R 3 代表氢或烷基；R 1 代表任选被取代的环烷基，任选被取代的环烯基或任选被取代的芳基；和R 2 代表任选被取代的烷基，链烯基，二烷基氨基或芳基。

On strength computation,the finite element models of rotating mirror were established according to the real structure of the mirror,and the rotating three-faced beryllium mirror were analysed.Results display that the surface deformation magnitude of the mirror is approximately 0.334 6 μm,and the maximum stress is 0.204 GPa at 600 m/s of edge linear speeed.The regions of maximum stress are on the axial hole and symmetric to symmetrical planes of mirror body,and keep beelines to surfaces.On the modal analysis,the results show that the first and second modals of bending vibration exist around 3.4×105 r/min and 6.6×105 r/min,which appear binate and orthogonal respectively,and another modal belongs to the first torsional vibration that occurs by 5.13×105 r/min.

运用该方法得出转镜镜面变形量、内部应力分布和振动模态参量的定量数值：在边缘线速度600 m/s下，三面体铍转镜的最大变形量为约0.334 6 μm；最大应力0.204 GPa，位于轴孔附近并与镜面距离最短处；两个在互相垂直平面内的一阶弯曲振动模态发生在3.4×105 r/min附近，一阶扭振点位于5.13×105 r/min附近，两个二阶弯曲振动点位于6.6×105 r/min附近。

RESULTS: For the ketamine anesthesia groups, the decreased signal intensity was observed at sensory cortex (r=0.79, 19.5%), at motor cortex (r=0.81, 16.6%), at thalamus (r=0.66, 4.5%), and at callosal gyrus (r=0.68, 4.7%).

结果： 氯胺酮麻醉可降低感觉皮层、运动皮层的信号强度，其r值分别为0.79， 0.81，信号变化强度分别为19.5%， 16.6%；丘脑和扣带回区信号也受到抑制，r值分别为0.66， 0.68，信号变化强度为4.5%， 4.7%。

Based on the development, classification, comparation of classific algorithms of spatial indices, the paper designs two efficient spatial indices including the improved quadtree and R+tree, applies them into spatial query processing, and realizes the spatial select query algorithm based the improved quadtree and R+tree, and nearest and k-nearest neighbour query based R tree.

在对空间索引技术的发展、分类和典型算法比较的讨论基础之上，本文设计并实现了两个高效的空间索引—改进的四叉树索引和R+树索引，并将这两个索引应用到空间查询处理中，分别实现了基于改进四叉树和基于R+树的空间选择查询算法以及基于R树的最临近查询和K最临近查询算法。

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。