Methods The left ventricular diastolic function, the blood speed during quick filling phaseof left ventricular of the mitral valve orifice, the peak value of the late phase of left ventricular diastolic pariod; E/A ratio, the time for isovolumetric relaxation phase of left ventricular, the reducel time of peak E, and the distance between peak E of mitral valve and intervertricular septum of left ventricular were measured respectively.
摘要］ 目的应用彩色多普勒超声心动图测定冠心病左室舒张功能，临床提供可靠的诊断及治疗依据方法分别测定冠心病组及对照组的左室舒张功能：二尖瓣口左室快速充盈峰值血流速度即E峰；左室舒张晚期峰值速度即A峰；E/A值，左室等容舒张时间，E峰减速时间，二尖瓣叶E峰与室间隔左室面的距离。
The eccentric tapered pipe/reducing socket's orifice tangential point is upward, is called goes against the even installment, generally uses in the pump inlet, favors the exhaust, the tangential point becomes the bottom even installment downward, generally uses in regulating valve's installment, the use row only.
偏心异径管/大小头的管口切点向上的时候，称为顶平安装，一般用于泵入口，利于排气，切点向下成为底平安装，一般用于调节阀的安装，利用排净。
Piston-type check valve assembly with an orifice to control the activities of the piston.
活塞式止回阀装配有一块孔板来控制活塞的活动。
With the increase of superficial gas velocity in the riser, the negative pressure gradient in standpipe decreases gradually and keeps steady finally. The negative pressure gradient and slip velocity in standpipe increase with the increase of circulating rate. Effects of aeration added to pyrolysis chamber on the gas/solid flow state are complicated. With superficial gas velocity in the riser and valve orifice at the bottom of the standpipe kept invariable, the flow pattern in the standpipe changes from negative pressure difference to positive pressure difference as the aeration increases.
随着表观气速的增加，立管中负压差梯度逐渐减小，最终基本保持不变；随着循环量的增大，立管内的负压差梯度及气固相对速度也随之增大；加到热解室内的松动气对立管内气固流动状态影响比较复杂，在提升管内表观气速及立管底部阀门开度一定的情况下，随着松动气量的增加，立管内会出现从负压差流动到正压差流动的转变。
The model of a kind of 3 way 6 port hydraulic valve and by which the working device is driven are built with AMEsim. And the program to compute the Orifice area is designed with Matlab. The simulation results are compared with the experimental results.
采用 AMEsim 仿真软件建立一种三位六通阀及其所驱动的工作装置的数学模型；开发了 Matlab 平台的阀口过流面积计算程序；利用两者进行仿真分析，得到了工作装置在不同作业方式下的压力、流量特性。
The characteristics of the hydraulic pipe orifice and spool valve under different conditions have been studied by numerical analysis.
对不同条件下液压阀节流孔口和滑阀的性能进行了仿真研究。
This problem becomes more critical if the valve is equipped with a restrictive flow orifice.
如果阀门配备有限制流速孔，这个问题就变得更加关键。
The Micro 10 rocker isolation valve's envelope size is almost 40% smaller than comparable 16 mm designs, but with orifice diameters reduced by only 10%.
10摇杆微隔离阀的信封大小几乎40％以上16毫米的设计比较小，但孔直径仅减少10％。
Third, check valve open and close when the boundary conditions If the hydraulic gradient Silent operating valves for air and gas pipeline systems of the base line and the valve axis of the same; unsteady flow conditions in F, through the valve orifice of the pressure head drop △ H0 has a relationship with Q0 as follows: This is the valve open and close when the boundary conditions, type of non-dimensional opening known as the valve closed curve.
三、止回阀启闭时的边界条件如果水力坡度的基准线与阀门的轴线一致；则在定常流情况F，通过止回阀孔口的压头降△H0与Q0如下有关系：这就是止回阀启闭时的边界条件，式中的无量纲开度又称阀门关闭曲线。
The boundary conditions treatment methods are provided for two-port component, such as orifice, relief pressure valve and silencer etc.
对管中的节流口元件、减压阀、消音器等两通口元件，均给出其边界条件的计算方法。
The above indicated moving time of the actuator. Are obtained in the following testcons:(1)Room Temperature.(2)Actuator Stoke 120°and 180°.(3)Solenold Valve with orifice of
5.5巴（79.7pis）（7）执行机构空截注：在现在使用中以一个或多个参数不同，动作时间会发生改变。120°和180°行程执行机构只能是双作用形成，其他规格的执行机构
Methods: 30 patients after successful ASD occlusion were studied. All the patients were examined by echocardiography before occlusion, 48 hours after occlusion and 3 months after occlusion. Blood spectrum of tricuspid valve orifice was measured in apical four chamber view. Peak and mean blood velocity and velocity-time integral of pulmonary valve orifice were measured in parastemal aortic root short axis view.
对成功实施ASD封堵术的30例患者行超声心动图检查，分别于术前24h、术后48h及术后3个月记录三尖瓣口及肺动脉瓣口多普勒血流频谱，测量三尖瓣口舒张早期及舒张晚期血流速度，及肺动脉瓣口血流峰值、平均流速和速度时间积分。
Results: After occlusion, the E velocity aid A velocity at tricuspid valve orifice decreased. The blood velocity, VTI and pressure gradient at pulmonary valve orifice decreased significantly.
结果：ASD封堵治疗术后三尖瓣口E峰、A峰峰值速度及肺动脉瓣口血流速度、积分和压力阶差显著降低。
On this plane, the aortic sinus, the left cardiac atrium, the left atrioventricularorifice, the left ventricle, the right atrium, the efferent tract of the rightventricle, the pulmonary orifice, the pulmonary valve, and the pulmonary trunk, could be observed.
该层面上可观察到主动脉窦、左心房、左房室口、左心室、左心房、右室流出道、肺动脉口及内可较好地观察到左右房室口及其瓣膜、主动脉口和肺动脉口及其瓣口、肺动脉干、升主动脉、上腔静脉、下腔静脉等重要结构。
Thermodynamic steam traps with thermodynamic model, pulse type, orifice plate 1, thermodynamic steam trap Thermodynamic Steam Trap valve within an activity, is sensitive to is the action, pieces of pieces.
热动力型疏水阀有热动力式、脉冲式、孔板式 1、热动力式疏水阀热动力式疏水阀内有一个活动阀片，既是敏感件又是动作执行件。
Thermal power-type traps GATE VALVES with thermal power type, pulse type, orifice plate 1, thermodynamic steam trap: Thermodynamic steam trap valve within an activity, not only sensitive parts is the implementation of action items.
热动力型疏水阀有热动力式、脉冲式、孔板式 1、热动力式疏水阀：热动力式疏水阀内有一个活动阀片，既是敏感件又是动作执行件。
Because the flow meter orifice pressure by correspondence before the impact of heavy flow, if required flow accuracy of 10%, the valve must be over before the straight section 10d, and this works in practice extremely difficult to protect.
由于孔板流量计的流量压差对应关系受到前流态影响极重，如果要求流量精度达到10%，则必须阀前有10d以上的直管段，而这一点工程实际中极难保障。
The applications of commonly used butterfly valve, gate valve, restriction orifice and wear resistant flow adjusting valve in dedusting system were concretely analyzed, and the mechanism of wear resistant flow adjusting valve was described in detail.
对工程中常用的蝶阀、闸板阀、节流孔板和耐磨型流量调节阀在除尘系统中的运用作了具体的分析，并着重对耐磨型流量调节阀的机理进行了比较详细的论述
The hardware of this control system is consisted of controller, electromagnetic proportional valve, pressure servo valve, relief valve, shut-off valve, pressure transmitter, restriction orifice, etc.
该系统的硬件部分主要由控制器、电磁比例阀、压力伺服阀、减压阀、截止阀、压力传感器、节流孔板等组成。
Results show that load change has evident effect on pressure and flow rate of operation orifice of pilot valve, and pressure value of operation orifice should fluctuate in a biggish range as design pilot valve.
分析表明，负载的变化对先导阀的出口压力和流量影响较大，设计先导阀时，工作口压力的波动值应在一个较大的范围内综合考虑。