流动

It is proved that the dual time step algorithm is efficient in the simulation of unsteady flow with the prediction of vortex shedding over circular cylinders and shock buffeting over bicircular airfoils.

在非定常流动的数值模拟中引入隐式双重时间步方法，并对2种经典的非定常流动现象进行计算，取得令人满意的结果，证明双重时间步方法具有较好的精度和较快的收敛速度。

Commissioned by the Education Bureau, CAITE will organiz e trai n ing programmes in September , 200 9 aiming at help ing teachers to master the technological and pedagogical skills that are necessary for the success of mobile learning .

香港中文大学资讯科技教育促进中心在教育局的委托下，开设了&应用无线及流动技术於学与教&的课程。主要介绍无綫和流动技术以及结合这些技术的专题研习教学法。

Through the analysis of the flowing character of metal injection molding, a set ofessential equations describing the flowing process of metal ring injection molding areestablished on the bases of the general principles of hydrodynamics and calorifics.

通过对金属粉末注射成形流动过程规律的分析，从流体力学和传热学的基本原理出发，建立了一组描述圆筒形金属粉末注射成形流动过程的基本微分方程，经过假设与简化，得到一组简化的控制方程，采用有限差分法求解了这组微分方程，得到温度场。

The research results showed that the effects of the Chenopodiaceae functional group on productivity were greater than other functional groups in shifting, semi-shifting and semi-fixed sandy grasslands.

结果表明：在流动、半流动和半固定沙地中，藜科植物的作用比较明显，而其他功能群植物的作用较弱；在固定沙地中，禾本科、豆科植物的作用明显增强。

The invention is characterised in that the gaseous fuel containing hydrogen or consisting of hydrogen is fed into the swirl generator (1) largely axially and/or coaxially to the burner axis, forming a fuel flow, with a largely spatially defined flow form (9) which is maintained inside the burner and opens up in the region of the burner outlet.

本发明的特征在于，所述含有氢气或者由氢气所组成的气态燃料在涡流发生器(1)内相对于燃烧器轴线尽可能轴向地和/或同轴地、在形成燃料流的情况下以尽可能空间受限制的流动形状(9)被输入，该流动形状(9)在燃烧器内得以保持，并且在燃烧器出口的范围内绽开。

Based on the resultsthe characteristics of the vortices in compressible flow are analyzed.

并分析了可压缩流动中旋涡运动的特征，与不可压流动的差别。

Secondly, the flow of condensation steam was compared with the flow of ideal gas. From the contrasted results, it can be found the difference between the condensative steam flowing and ideal-gas flowing. And, it also can be found out that it is inevitable to condense for steam flowing under the supersonic state. At the same time, the major areas which formed second drips have been displayed in the solved results. Finally, the flow of condensation steam in the 3-dimension model has been simulated.

其次，对比了具有凝结的蒸汽与理想气体之间的流动情况，经过对比可以发现凝结蒸汽在流动中与理想气体之间的差异，发现蒸汽的凝结在超音速状态下是不可避免的，并且在计算结果中通过图形显示出了形成二次水滴的主要区域。

Chinensis, which the herbicide resistant bar gene had been introduced, was planted in the central area of the field and the routine Cruciferae crops were on its two sides.

距离转基因白菜 0～ 3m处为花粉的主要流动区域，其频率占总流动率的 5 0 %左右。2 0m隔离带后基因的流动频率仅为10m隔离带后的 1/2 0 。

objective: to investigate diagnosis and treatment choice of detrusor hypoactivity with impaired contractile function on voiding function in benign prostatic hyperplasia.methods:the clinical date of 48 bph patients with dhic were analyzed,including clinical diagnosis,urodynamic parameters,treatment and follow-ups.results:37 patients with detrusor instability and over 40 cmh2o bladder pressure were treated successfully by turp.the time of indwelling suprapubic punctural cystostomy cathter was(1~8)weeks.11cases without di and under 40 cmh2o bladder pressure were treated by suprapubic punctural cystostomy,accepted the test of urodynamics after(1~3)months.7 cases with di were treated successfully by turp,4 cases without di were indwelled suprapubic punctural cystostomy cathter all life.conclusion:dhic worsens the voiding function of the patients with bph,and the test of urodynamic is helpful to diagnose and could provide more convinced evidences for treatment of patients.

分析膀胱过度充盈所致逼尿肌损伤，引起膀胱逼尿肌收缩无力良性前列腺增生48例患者的临床资料，包括诊断，尿动力学检查，治疗及随访结果。结果：37例经尿流动力学检查，诱发存在逼尿肌不稳定，伴膀胱内压达40 cmh2o以上，采取turp，术后留置膀胱造瘘管（1~8）周后全部拔除，排尿通畅。11膀胱内压始终未达到40 cmh2o，且在膀胱注水充盈过程中无逼尿肌不稳定出现，行膀胱造瘘后出院，（1~3）个月后经尿动力学检查复查膀胱逼尿肌收缩力，其中7例膀胱逼尿肌收缩功能有恢复，行经尿道前列腺汽化电切术治愈；剩余4例膀胱逼尿肌收缩功能几乎无任何改善。长期留置膀胱造瘘治疗。结论：良性前列腺增生导致膀胱过度充盈所致逼尿肌损伤，引起膀胱逼尿肌收缩无力患者，术前应用尿流动力学检查对膀胱逼尿肌损伤程度进行认真分析，可进行有针对性的治疗。

Methods: In alkaline condition, reaction between amino acids and phenylisothiocyanate formed a derivant of phenylisothiocyanate-amino acid. For RP-HPLC, the Diamonsil C18 column 250 mm×4.6 mm,5 μm） and binary gradient elution were used. The mobile phase A was 0.1 mol/L sodium acetate solution-acetonitrile (93∶7） and the mobile phase B was acetonitrile-water（80∶20）. The detecting wavelength was 254 nm.

在碱性条件下，氨基酸与异硫氰酸苯酯反应，生成异硫氰酸苯–氨基酸的衍生物，采用 Diamonsil C18色谱柱（250 mm×4.6 mm，5 μm），用二元梯度洗脱方式，流动相A为0.1 mol/L乙酸钠–乙腈（93∶7），流动相B为乙腈–水（80∶20），检测波长254 nm。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。