流空

According to the cross wind ,the aerodynamic field inside and outside an air cooling tower is numerically simulated.

对侧风条件下空冷塔内外的空气动力场进行了数值模拟，分析了塔外速度分布、压力分布，并与相应条件下理想流体圆柱绕流的情况进行了比较。

Methods Fourteen mutated vpr fragments were selected from patients with HIV. Both eukaryotic expression vector pcDNA3.1 and PCR products were purified, double-cut by Hind Ⅲ and BamH Ⅰ, and the cut products were legated and transformed into competent cells JM109. The 14 reconstructed plasmids were transfected into Hela cells. Cells with pcDNA vpr-wt, pcDNA vpr-Fs and pcDNA3.1 blank cells, and without pcDNA3.1 cell were established.

以14个带有HIV-1vpr基因片段的PcD-NA3.1真核表达载体构建重组质粒，将其转染Hela细胞，并设立保守株vpr基因转染细胞、突变株vpr-FS基因转染细胞、空载体转染细胞和未转染细胞作为对照，经逆转录多聚酶链式反应检测目的基因转染成功后，Pi染色，用流式细胞仪检测被转染细胞的细胞周期分布和细胞凋亡率。

Methods 14 mutanted vpr fragments selected from Chines patients with HIV. Both eukaryotic expression vector pcDNA3.1 and PCR products purified , double-cut by HindⅢ and BamH and the cut products legated and were into competent cells JM109. The 14 reconstructed plasmids electronically transfected into hela cells, and established cells with pcDNA vprwt 、pcDNA vpr-Fs and pcDNA3.1 blank cells, and without pcDNA3.1 cell.

将14个带有HIV-1 vpr基因片段的pcDNA3.1真核表达载体构建重组质粒，将其转染Hela细胞，并设立保守株vp r基因转染细胞、突变株 vpr-FS基因转染细胞、空载体转染细胞和未转染细胞作为对照，经RT-PCR检测目的基因转染成功后，经Pi染色用流式细胞仪检测被转染细胞的细胞周期分布和细胞凋亡率。

In the paper, we investigate, respectively, the unsteady transport properties of heat and moisture in enclosure under constant wall heat flux and constant wall temperature when porous particles are small and Darcy number is lower, the effect of conductivity ratio, heating conditions and other parameters on the heat transfer rate of enclosure when particles are larger and Darcy number are higher.

并分别对多孔颗粒较小时的低Da数封闭腔内的非饱和渗流与传热，及颗粒较大的高Da数封闭腔内的非饱和自然对流行为进行了数值模拟，研究了低Da数时湿分与热量在恒热流与恒壁温条件下的非稳态传递特性，高Da数时封闭腔的传热与流动特性、达西效应以及导热比、加热条件等对空腔传热系数的影响。

Aerators are widely used in flood discharge tunnel s and spillways to prevent the cavitation damage of the structures.

对高水头、大单宽流量、低佛氏数、小底坡长明流泄洪洞，在反弧段末端采用常规的掺气坎往往难以取得理想的掺气效果，同时，反弧段下游边墙易出现空蚀破坏。

Flow patterns of gas-liquid two-phase upward flow in vertical annuli are studied inthis paper.

探讨了垂直环空中气液两相向上流动的流型及其研究现状。

Finally, the applications of the theory and the calculation methods of the helical flow of the non-newtonian fluids in eccentric annuli to the petroleum drilling engineering are disscussed.

本文的最后，还讨论了本文提出的关于非Newton流体偏心环空螺旋流的理论和计算方法在石油钻井上的应用。

The cavitating flow visualization was carried out in a transparent model which internal passage is identical with the metal test valve.

空泡流的可视化在透明模型中完成的，其内部通道与金属测试阀相同。

Results All of the tumor was exsected successfully, the average inosculating time was 28 min and average total operation time was 132 min. The postoperative complications was few and no anastomotic stoma fistula, anastomotic stoma narrow, stomal ulcer or chest gastric emptying block was occurred. The average length of stay after operation was 9.7 days.

结果 肿瘤均顺利切除，平均管状胃吻合成形时间28min，平均总手术时间132 min；术后并发症少，无吻合口屡或狭窄、吻合口溃疡、反流性食管炎及胸胃排空障碍发生；术后平均住院时间9.7d。

In the reverse-tainter-gate-tunnel design of a high-rise shiplock water-filling system, it is of crucial importance to prevent flow cavitation and gate vibration.

在本部分，结合对近几年研究成果的总结，分析了水流空化成因与流态振荡机理，为探讨合理的减蚀防振措施提供理论依据。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。