Conclusion DSCT can accurate measure mitral valve orifice area with heart mitral disease.
结论DSCT可准确评价二尖瓣病变瓣口面积。
They can produce a "ball valve" effect by intermittently occluding the atrioventricular valve orifice.
他们可以产生“球阀”效应，引起房室瓣口间歇性关闭。
According to media performance and the use of period and should always check the valve orifice at the top of the Ministry of PTFE seals and PTFE sheet.
根据介质性能及使用期，应经常检查阀体顶部四氟密封圈和孔板部的四氟薄片。
RESULTS: the reverse flow were detected at the mitral valve orifice of left atrium, at the opposite of which in left atrium the front flow were also detected.
结果：在观察到二尖瓣口左房侧负向血流的同时，在其左房的相对面可测到前向性血流。
Color m mode Doppler echocardiography studies were obtained from mitral valve orifice toward the apex: the rate of flow propagation velocity (FPV) from apical 4 chamber views.
将m型取样线置于二尖瓣口左室流入道至心尖获取彩色左室舒张期血流传播图测量fpv。
A type of quick-opening valve whose orifice is opened and closed by a disk that pivots on a shaft in the throat of the valve.
一种快开式阀门，其孔口的开启和关闭靠装在阀门颈部枢轴上的圆盘。
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。
Two common types are the fixed orifice, or the orifice tube, and the thermostatic expansion valve.
两种常见形式是固定节流阀式或节流管式，以及节流膨胀阀。
A type of valve, typically found on small-diameter pipework, that incorporates an orifice or flow-restriction device to control fluid flow.
一般用于小直径管道系统的一种阀。它包括一个用于控制流体流动的孔板或限流装置。
The entrance of refrigerant into the evaporator is controlled by a valve or an orifice.
进入蒸发器的制冷剂由一个阀或量孔控制。
It is also stressed that the orifice of the valve adopting linear, small gain form is suitable to reduce open-loop gain of the system and increase the stability.
文中还强调平衡阀的节流口宜采用线性小增益形式，以利于降低系统开环增益，提高稳定性。
This results in an unbalanced condition which allows the main line pressure to lift the diaphragm off the main orifice and, thereby, open the valve.
在一个不平衡的状况，允许为主线的压力，解除了主要的孔隔膜，从而打开阀门这个结果。
Set pressure and orifice size determine valve capacity.
根据设置压力和节流孔通径来确定阀门的流容。
Because of the low viscosity of emulsion, valve type orifice was used in emulsion motor and the volumetric efficiency was ensued.
针对乳化液黏度低的特点，将所设计的乳化液马达采用了阀式配流，从而保证了较高的容积效率。
Compressor working chamber is not interlink with the suction, exhaust orifice at the same time, without setting suction, exhaust valve, in this regard to reduce the intake, exhaust losses.
压缩机工作腔不与吸、排气孔口同时相通，无需设置吸、排气阀，这一方面减少了进、排气损失。
The concept of Hydraulic Confined Piston Internal Combustion Pump (CPICP) and its working principle are put forward, also the dynamic analysis of the valve type orifice system is made.
提出了约束活塞型内燃式水泵的概念和它的工作原理，对其阀式配流系统进行了动力分析。
The tests demonstrate fiat the valve acts as an orifice.
试验表明：安全阀的流动特性和孔扳相类似。
The dynamic equation of valve type orifice system of confined piston internal combustion pump was built.
提出约束活塞型内燃式水泵的概念并阐述其工作原理，建立了阀式配流系统的动力模型。
This oil outlet passage feeds oil from the outlet of the orifice to a space defined under the bottom of the valve housing.
石油出口通道，这饲料从口出口石油根据阀门的房屋底部定义的空间。
This paper introduces the structure, setting principle, orifice diameter calculation, selection and installation requirement for safety valve.
介绍了安全阀的结构、设计原则、喉径计算、选用和安装要求。
The filter member includes a filtering part to filter oil, a second orifice to rectify oil flow, and a check valve to permit oil to flow back when braking operation is released.
该过滤器的成员包括一个过滤器的一部分石油，第二个孔，以纠正油流，单向阀，允许石油回流时，制动操作释放。
The automatic separation system of injector valve and orifice has low cost, high separation accuracy, high separation speed and easy operation.
本课题研究的自动分选系统价格低廉，分选精度高，测量速度快，操作简单，性价比高。
Objective: To evaluate the clinical effect of the double-orifice technique in the treatment of the anterior leaflet prolapse of mitral valve.
目的进一步探讨双孔成形技术治疗二尖瓣前叶脱垂的临床可行性。
Methods: 35 patients with severe anterior leaflet prolapse of mitral valve underwent valve repair using the double-orifice technique.
方法对35例二尖瓣前叶脱垂的病人行双孔成形手术，并在术前、术中、术后利用超声心动图对瓣膜进行评价。
Objective To discuss the clinical value of color Doppler echocardiography in diagnosing double-orifice mitral valve (DOMV).
目的通过总结分析先天性双孔二尖瓣畸形（DOMV）的超声表现，探讨彩色多普勒超声心动图的诊断价值。
Each spray orifice is provided with a single way valve which is swathed with a belt and cooperates with the spray orifice.
每个喷孔内均设一个单向阀，这个单向阀由包带缠裹而与喷孔配合。
The utility model can prevent the discharge-orifice steel columns of the upper draining valve cover from cracking, increase the service life of oil-well pumps, and lower oil-production cost.
本实用新型可防止抽油泵在采油过程中上排出阀罩出油孔筋柱裂断，提高抽油泵的使用寿命，降低采油成本。
All these characteristic can satisfy the demand of the factory. By using this system can change the laggard situation of the manual separation of injector valve and orifice.
能满足喷油嘴偶件生产厂家对喷油嘴偶件针阀、针阀体自动分选精度，速度的要求以及对成本投入的要求，改变手工分选的落后局面。
All these characteristic can satisfy the demand of the factory. By using this system can change the laggard situation of the manual separation of injector valve and orifice.
能满足喷油嘴偶件生产厂家对喷油嘴偶件针阀、针阀体自动分选精度，速度的要求以及对成本投入的要求，改变手工分选的落后局面。
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