查询词典 valve

Valve element clutch of hydraulic diverter valve is one of many Malfunction of Hydraulic control system. In severe cases , it may be lead to accidents.

摘 要：液压换向阀卡紧是液压系统常见的问题，严重时甚至会可导致事故。

A nonlinear mathematical model is built for the attracting process of an electropneumatic valve of the low-thrust LRE with high-pressure chamber. When the input parameters are changed, the response characteristics of the valve during the attracting process is analyzed in detail.

对小推力高室压液体火箭发动机用的电动气阀的吸动过程建立了非线性数学模型并进行了响应特性的数值计算，详细分析了改变输入参数时电动气阀在吸动过程中所表现出的响应特性。

September 17, 2007 — An implantable endobronchial valve has been found to significantly improve lung function measures and quality of life for patients with emphysema. The valve is designed to block air flow to a diseased region of an emphysematous lung, thereby conferring the benefits of lung volume reduction surgery without the risks of major surgery.

September 17， 2007－一项植入性支气管内瓣膜已经被证实可以显著改善肺气肿病患肺功能、以及生活品质，这个瓣膜被设计来阻断气流进入肺气肿肺的罹病部位，因此提供了肺容积减低手术的好处，却不用冒进行重大手术的风险。

A design of multifunctional valve for the ERD was put forward, using a specially designed valve to replace the four valves situated on the cylinder end. The unit was greatly simplified.

论文提出了一种阀控余压能量回收装置专用多功能阀门的设计方案，用特殊设计的阀门代替原有的水压缸端四个电磁阀，有效简化了系统。

Automatic control commissioning: When detector sends alarming signal to the fire control center, the solenoid valve at the terminal exhauster and pre-active alarming valve unit is turned on and get the fire sprinkling pump started up.

自动方式调试：探测器报警信号传至消防控制中心，联动打开末端排气装置和预作用报警阀组上的电磁阀，并联动启动消防喷淋泵。

And the relief valve , pressure maintaining valve with gas tank are adopted in auto water-spraying system and the advantages of adopting gasoloid extinguishant in main outfire system are explained.

同时 ，介绍了自动喷水系统采用减压阀、稳压泵带气压罐和主体灭火系统采用EBM气熔胶灭火剂的优点。

Part II: Experimental study of artificial extravascularvenous valve To design an artificial extravascular venous valve and to validate its function of preventing venous reflux.

二静脉外间接人造瓣膜的急性期实验研究材料和方法：设计一种放置在静脉壁外的人造瓣膜，验证该人造瓣膜的抗返流作用。

Based on analysis of the current state of the flow pattern modeling abroad and at home, explains the meaning of the mathematical simulation of the flows in the valve.(2) Comparing flow simulation data of jet pump with its experimental one, the feasibility and reliability of FLUENT used for flow simulation are proved.(3) Based on the characteristic of valves, the fluid field analysis of specific ring-spray type flow-adjustable is finished. The valve structure is optimized to meet the need, which makes it have such advantages:(1)smaller vortex area and faintish vortex intensity, so the vibration of vortex is controlled effectively;(2)the pressure is distributed more equality, the transition area is larger.

论文的主要内容包括：(1)简述了阀门研究的现状与发展，在分析与总结国内外流体流动模拟研究的基础上，探讨开展阀门内水流运动数值模拟的意义；(2)对特定型号的射流泵进行了内部流场的数值模拟研究，并与实验数据相比较，验证了应用Fluent进行数值模拟的可行性和可靠性；(3)针对调流阀的特点，对特大口径环喷式流量调节阀进行流场计算，其设计指导思想如下： 1、控制旋涡，减小旋涡区，减小涡的强度； 2、控制压力分布，使阀体受力更均匀，改善局部应力状态，提高阀门使用的安全性； 3、最小绝对压力高于水的汽化压力，不产生汽蚀。

This paper introduces the principle and performance of pressure relief valve in de- tail,and sets up the mathematical model for design and calculation of pressure relief valve on the basis of pneumatic and gastight theory in order to provid...

本文在阐述气压调节阀的工作原理及性能特点的基础上，应用气动、密封理论，推导建立了气压调节阀设计计算数学型，为我国自行研制该类装置提供参考。

To solve the control problem of micro-flow or low flow on pesticide in the course of variable rate spraying, an electromechanical flow control valve was developed with a miniature pin valve, a direct current motor, and gearset.

采用小型针阀、直流电动机及减速器设计了机电流量控制阀，解决了变量喷雾过程中药液微小流量的控制问题。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷