并流

The impact of capillary pressure on twophase flow in waterwettish reservoir is studied. The one dimensional control differential equation is derived,and solved by numerical limited difference method.

首先建立一维渗流模型和相应的渗流微分控制方程，用数值差分的方法进行求解，并绘制产量图和采出程度图，分析启动压力梯度和毛管力对水驱油效果的影响。

It is revealed by the saturated single liquid seepage experiment performed by FDES-641 triaxial system that the movement of low speed seepage in low permeability media departs from the law of Darcy, meanwhile the curve of seepage flow would not pass through the origin of coordinates.

本论文作为国家自然科学基金资助项目"低渗透弱胶结岩石非线性渗流机理研究"的一个组成部分，通过对低渗透岩石系列渗流实验结果进行深入研讨并结合数值分析的方法，对该课题开展了研究。

So a method that combining the model experiment and numerical computation are discussed in this paper. The flow-induced vibration response of the plane recumbent gate in ShangHai qingshui river is computed in this method, and the result is reasonable and credibility, this method can be extend to compute the other hydraulic structures like overfall dam, guide wall, gate pier and so on, which is under fluctuating pressure.

由此探讨了一种将水力模型试验跟数值计算相结合来计算闸门流激响应具体值的方法，并应用于上海清水河泵闸水下卧倒门的流激响应计算上，结果合理可靠，该方法可以推广应用于溢流坝面、导墙、闸墩等受水流脉动荷载作用的其它水工建筑物。

Firstly, according to the modified workflow process meta-model, a P/T system based workflow model procedure net is proposed.

首先，根据改进的工作流过程元模型，研究并提出了一种基于P/T系统的工作流过程模型过程网。

Because this equation has the character of parabolic type in mathematics, it could provide a very accurate and powerful tool for computing fluid mechanics and heat transfer characteristics in micro-tubes after fully developed region.

我们为了方便计算程式的求解过程，将三维的圆形微管流简化为二维轴对称x-r方向的平面流场，并求解边界层方程式。

Methods In situ single pass perfusion model was used and the concentrations of three components in perfusate were determined by HPLC in combination with diode array detection.

运用单向灌流模型并采用HPLC法同时测定莪术油中三成分在灌流液中的浓度。

In the first 2-3 hours there is always a strengthening of contraction, while after 5-10 hours, when the heart gives much feebler contraction due to exhaustion, this beneficial effect of phosphatide tends to disappear.

二葡萄糖在灌流液中的作用视室温与离体时间而定。在较高室温长期灌流而衰竭的心脏，葡萄糖是必要的，它可以维持心肌收缩并被心肌所消耗。如心脏离体时间较短，室温较低，则葡萄糖并非必需。

Then size properties and crystal characteristics of lily starch granules were observed with combination of photomicroscope, scanning electronic microscope , polaried light microscope and X-ray diffraction. Compared with potato starch and cornstarch, solubility, swelling power and freeze-thawing properties of lily starch were measured by centrifugal method; its thermal, rheological and mechanical properties were systematically investigated by DSC, Rheometer and Texture Analyser, respectively.

然后用光镜、电镜、偏光显微镜与X-衍射相结合研究了百合淀粉粒的表面结构和晶体结构特征，并与马铃薯淀粉、玉米淀粉相比较，用离心法考察了百合淀粉的溶解度、膨润力与冻融性能，用差示扫描量热仪、动态流变仪与质构仪等手段深入系统地研究了其热学特性、回生过程中的流变学特性和力学性能。

In chapter 7, the DPIV (Digital Particle Image Velocimetry) systems is set up, the physical models such as sudden expansion channel, flow-out poppet valve and spool valve is fabricated.

第七章建立流场DPIV实验可视化系统，制做突然扩大流道模型，外流式锥阀模型和滑阀模型，并利用粒子图像测速技术对模型的速度场进行测量。

Methods:43 patients including 10 with mitral stenosis associated aortic regurgitation, 12 with mixed mitral valve lesions and 21 with mixed mitral valve lesions and combined with aortic regurgitation were studied.MVA determinded by (1) two -dimensional echocardiography with a cross-sectional area in the short-axis view (2DE),(2) pressure half-time using formula of 220/PHT,(3) color Doppler flow imaging with a jet cross-sectional area in the short-axis view with planimetry,(4) CDFI with a color jet width at the mitral valve orifice in the apical four-chamber view and long-axis view, assuming an elliptic mitral orifice, compared with the orifice area of excised mitral valve during mitral valve replacement.

材料与方法∶分别用二维超声(2DE)、压差减半时间、彩色多普勒二尖瓣口血流截面积和椭圆形面积法测定43例风湿性心脏病二尖瓣狭窄拟行人工瓣置换术患者的MVA，其中合并主动脉瓣反流 10例，合并二尖瓣反流 12例， 21例，并与手术标本的实测面积相比较。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。