Valve相关论文
目的观察糖尿病性新生血管性青光眼的综合治疗效果。方法回顾性病例研究。收集濮阳市安阳地区医院2015年6月至2019年12月糖尿病性......
目的分析慢性风湿性心脏病瓣膜的超声特征，探讨其在临床诊断中的价值。方法抽取2015年1月至2020年12月晋城市人民医院收治的慢性风......
A twin-accumulator hydro-pneumatic suspension has been developed based on the off-road vehicle in order to meet the requ......
The hydraulic caliper disc brake system with air-over-oil is widely adopted at present for heavy vehicles,which makes us......
With more and more attention on degradation process, we need the degradation model to be accurate all over the time rath......
Objective: To observe the effects of atorvastatin on serum matrix metalloproteinase-2(MMP-2), matrix metalloproteinase-9......
采用双源CT评价正常肺动脉瓣形态学特征及动态特征。对30例正常成人行双源CT冠状动脉造影，右室流出道显影良好者纳入该研究。重建10......
The year 2010 has witnessed a significant progress on the development of a 14 MeV compact cyclotron, CYCIAE-100. This pa......
In this paper, the mathematical models for mould-filling under counteramvity are derived on the basis of the principle o......
目的探讨Ahmed青光眼减压阀植入术对角膜内皮细胞的影响。方法对开角型青光眼40例(42眼)行Ahmed减压阀植入术，术后随访观察1、3、6......
目的观察Ahmed引流阀植入治疗糖尿病新生血管性青光眼(NVG)的效果。方法2005年12月至2013年5月住院的38例(38眼)采用Ahmed引流阀植......
目的观察硅胶带植入术治疗青光眼引流阀植入术后滤过泡机化包裹的新方法。方法回顾性分析本院2017年4月至2019年5月经结膜滤过泡囊......
目的比较FP7型与FP8型Ahmed青光眼阀(AGV)植入术治疗成人难治性青光眼的效果。方法回顾性分析2015年5月至2019年2月40例成人难治性......
Air leaks can occur as a complication of thoracic surgery,bronchoscopic procedures,or from barotrauma due to mechanical ......
In order to investigate the NOxemission of hydrogen internal combustion engines.A test system for four-cylinder intake p......
We introduce a novel calibration optical path of the cryogenic radiometer, which can avoid the repeated dismounting meas......
The pulse detonation rocket engine (PDRE) requires periodic supply of oxidizer, fuel and purge gas. A rotary-valve assem......
A new closed loop flow controlling principle through correcting the valve’s opening area while load pressure is changi......
An inter-phasing pulse tube cooler (IPPTC) consists of two pulse tube units, which are connected to each other at hot en......
Hydraulic power steering gear supplies assistant power by liquid stream. The stream will be changed greatly for the flow......
提出并设计了一种径向流磁流变阀,并加工了样机进行压降性能分析。该径向流磁流变阀的液流通道由2个中心小孔、1个圆环通道和2个径......
The computational flow rate feedback and control method,which can be used in proportional valve controlled hydraulic ele......
This paper describes mainly a decision-level data fusion technique for fault diagnosis for elec-tronically controlled en......
1. Lost Foam Casting Committee of Foundry Institu- tion of Chinese Mechanical Engineering Society (FICMES) From the begi......
The structure principles under the flow and pressure working conditions are studied,in order to investigate the dynamic ......
To evaluate the performance of newly designed electro-pneumatic valves (EPVs) for the air-powered engine (APE) and study......
Proportional direction valve is one of the most fundamental elements in electronic-hydraulic control technique. Its func......
In this paper, by studying the different kinds of jetting system in patternless casting manufacturing (PCM) technique, t......
In lost foam casting (LFC), the distribution of polymer beads during the bead filling process is not uniform, and the co......
Water-assisted injection molding(WAIM), an innovative process to mold plastic parts with hollow sections, is characteriz......
Vacuum die casting is the optimal method to produce high quality aluminum alloy components.At present,there are still ve......
Specified pressure difference check valve 20CH1H61Y-420P is a check valve with high temperature and high pressure, which......
Quantitative sampling,dilution and separation for high-level radiation solution must be in hot cell.Because of difficult......
In 2009,neutron guide engineering team has completed the installation of the cold neutron guide system.For the neutron g......
We investigate the electron transport in silicene with both staggered electric potential and magnetization; the latter c......
【摘要】本文以阀门机械为例，分析了机械工程英语的语言特点。研究表明，采用直译、句群拆分与整合、转译的策略，可使译文更加准确、通......
Soilless culture in China has developed rapidly in recent years. The area of soilless culture in China was about 0.1 ha ......
A GMR(giant magneto-resistive) spin valve sensor for magnetic recording has been designed in an attempt to solve the Bar......
A single on/off valve is used to carry out the position control of the asymmetrical hydraulic cylinder. The inuence of t......
Sliding Mode Control in Position Control for Asymmetrical Hydraulic Cylinder with Chambers Connected
In this paper, single, two-position, two-way proportional valve is used to carry out the positon control of asymmetrical......
The existing hydraulic system always have problems of temperature rise,runningstability and anti-interference of the im......
Based on information entropy theory, the definition of relative entropy, and the relative entropy minimum principle, thi......
目的 观察泛视网膜光凝联合Ahmed减压阀植入术治疗新生血管性青光眼的临床效果.方法 对28例(30眼)新生血管性青光眼先行泛视网膜光......
介绍了P&ID图在窑炉设计中的应用。对P&ID图中重点内容：窑炉设备、管道仪表、阀门、法兰及其它控制规范作了简单的介绍。对辊道窑的......
主要分析可修表决系统的可靠性指标算法。传统的基于元件寿命独立同分布假设的模型无法考虑负载效应因素,而考虑负载效应的解析算......
针对中煤鄂尔多斯能源化工有限公司项目一期工程建设期间,仪表专业所存在问题进行了总结和改进,供同类工程项目仪表专业借鉴.“,”......
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
通过优化设计碳、锰、硅元素含量及锰碳比、碳当量，将碳含量控制在0.18%～0.22%，锰含量控制在1.22%～1.32%，保证锰碳比≥6；合理设计热处理......
针对目前火力发电厂无法实现阀门的泄漏故障定量诊断的问题,通过理论和试验相结合的研究方法探讨了阀门泄漏率与泄漏声发射信号特......
