1)critical pressure ratio临界压力比
1.The formula of the critical pressure ratio for safety valve is proposed.在安全阀临界压力比分析研究的基础上 ,提出了一种确定安全阀临界压力比的计算公式 安全阀临界压力比主要受喷管临界压力比和阀瓣流阻系数的影响 ,由喷管临界压力比可确定安全阀临界压力比 由于阀瓣流阻系数过大 ,安全阀一般处于亚临界流动状
2.The necessity of using sonic conductance C and critical pressure ratio b to describe the flow rate characteristics of pneumatic components was discussed firstly,then the principles and the test device of ISO/DIS6358 standard were introduced and its advantages and disadvantages were analyzed.论述了利用声速流导C与临界压力比b描述气动元件的流量特性的必要性,介绍了ISO/DIS6358标准的原理及试验装置,分析了其优缺点,参考等温容器放气法替代ISO标准测试方法,介绍了等温容器放气法的试验装置和方法及测试原理。
3.According to ISO6358 which is concerned with the definition of two parameters, that is sonic conductance C and critical pressure ratio b for flow characteristics of pneumatic components, calculating methods of C & b for air tube are derived from theoretical analysis.根据ISO6358关于流量特性参数声速流导C值和临界压力比b值的定义,结合相关气动理论,给出了气管道流量特性参数的计算方法,并编制了相应的计算机程序进行了仿真。
2)critical operating pressure ratio临界操作压力比
1.e the critical operating pressure ratio (R-), selectivity coefficient (α-) and feed concentration (x1-) ,and the optimum operating pressure ratio and selectivity coefficient are first proposed.提出了“三临二优”（系指临界操作压力比R~-、临界选择系数α~-、临界进料浓度x_f~-和最优操作压力比R~+、最优选择系数α~+）新概念,通过计算、分析和优化等手段,在x_f≥0。
3)critical pressure ratio临界压比
1.Sonic point position and critical pressure ratio in non-uniform microchannels*;变截面微管道内声速点位置及临界压比
2.This paper gives a mathematics model based on the definition of the critical pressure ratio of the steam turbine stage, the characteristics of the water and the steam and the detail calculation of a single stage. 从级临界压比的定义出发,依据水和水蒸汽性质,在单级详细计算的基础上给出汽轮机单级临界压比的求算方法,该算法易在计算机上实现。
4)critical pressure临界压力
1.New theory in the front of theoretical basis research of molecular thermodynamics 4: on molecular structure of organic compound and theoretical equation of critical pressure;分子热力学前沿基础领域中的新理论4:论有机纯质的分子结构与临界压力理论方程
2.Prediction of the critical pressures of alkanes using a quantitative structure property relationship;应用QSPR方法预测烷烃的临界压力
3.The critical pressure of two spans beams with one end fixed and the other hinge joined;一端固支一端铰支二跨梁屈曲的临界压力
英文短句/例句
1.LOWERING PRESSURE METHOD IN SPACECRAFTS降压地面模拟技术中的临界压力研究
2.Both will break at the same critical state of stress.两者将在相同的临界压力状态下破碎。
3.Prediction of the critical pressures of alkanes using a quantitative structure property relationship;应用QSPR方法预测烷烃的临界压力
4.Material Analysis for High-temperature Components of Ultra Supercritical Pressure Boilers超超临界压力锅炉高温部件材料简析
5.An intriguing question arises when chamber pressure is greater than critical.当室压高于临界压力时引起一个有趣的问题。
6.R&D of T92 High-pressure Boiler Tube for Ultra Supercritical Pressure Boilers超超临界压力锅炉用T92高压锅炉管的研制
7.Study on Nonlinear Hydraulic Features of Water Circulation Systems at Supercritical Pressure超临界压力水循环系统非线性水动力特性研究
8.Influences of Heat Transfer Crisis on Temperature Profile of Supercritical Water Wall in Near Critical Pressure Region近临界压力区传热恶化对超临界锅炉水冷壁温度场的影响
9.In-furnace Heat Transfer Formula for Large-capacity Supercritical and Ultra-supercritical Pressure Boilers大容量超临界和超超临界压力锅炉炉膛传热公式
10.Ultra-supercritical coal-fired boiler used in Shin-Isogo Power Station日本新矶子电站超超临界压力煤粉锅炉
11.Heat Transfer Analysis and Regression Evaluation of Fluids at Supercritical Pressures in Vertical Upward Ducts;超临界压力下竖直上升管传热分析与回归评价
12.Choosing of High-temperature Steam Pipe Materials for 1000MW Ultra Supercritical Pressure Units超超临界压力1000MW机组高温蒸汽管道材料的选用
13.The Determination of the Critical Technical Supply Pressure of the Rubber Guide Bearing of the Axial Pump轴流泵橡胶导轴承技术供水临界压力的确定
14.Diagnosis and Treatment of Vibration Fault on Generator of Subcritical Pressure 600MW Unit亚临界压力600MW机组发电机振动故障诊断及处理
15.Numerical Simulation of Convection Heat Transfer for CO_2 at Supercritical Pressure in Vertical Circular Tube超临界压力CO_2在垂直管内对流换热数值模拟
16.CONVECTION HEAT TRANSFER OF CO_2 AT SUPERCRITICAL PRESSURES IN TUBE DURING COOLING冷却条件下管内超临界压力CO_2对流换热研究
17.Characteristic Analysis on Built-in Start-up System of Home-made Supercritical Units国产超临界压力锅炉内置式启动系统特性分析
18.Analysis of transcritical R23 heat pump systemR23跨临界循环最优高压侧压力分析
相关短句/例句
critical operating pressure ratio临界操作压力比
1.e the critical operating pressure ratio (R-), selectivity coefficient (α-) and feed concentration (x1-) ,and the optimum operating pressure ratio and selectivity coefficient are first proposed.提出了“三临二优”（系指临界操作压力比R~-、临界选择系数α~-、临界进料浓度x_f~-和最优操作压力比R~+、最优选择系数α~+）新概念,通过计算、分析和优化等手段,在x_f≥0。
3)critical pressure ratio临界压比
1.Sonic point position and critical pressure ratio in non-uniform microchannels*;变截面微管道内声速点位置及临界压比
2.This paper gives a mathematics model based on the definition of the critical pressure ratio of the steam turbine stage, the characteristics of the water and the steam and the detail calculation of a single stage. 从级临界压比的定义出发,依据水和水蒸汽性质,在单级详细计算的基础上给出汽轮机单级临界压比的求算方法,该算法易在计算机上实现。
4)critical pressure临界压力
1.New theory in the front of theoretical basis research of molecular thermodynamics 4: on molecular structure of organic compound and theoretical equation of critical pressure;分子热力学前沿基础领域中的新理论4:论有机纯质的分子结构与临界压力理论方程
2.Prediction of the critical pressures of alkanes using a quantitative structure property relationship;应用QSPR方法预测烷烃的临界压力
3.The critical pressure of two spans beams with one end fixed and the other hinge joined;一端固支一端铰支二跨梁屈曲的临界压力
5)critical load临界压力
1.The curvature formula of tiny curved rod,together with the vector method of area,is applied to inference for Euler formula about critical load of slender compressive rod which one end is fixed and another is free.利用杆件微弯的曲率公式和面积向量法,求得一端固定、一端自由压杆的临界压力欧拉公式,为该约束条件下细长压杆的临界压力公式推导提供了另一种方法。
2.And then,the equations are applied to inference for Euler formula about critical load of slender compressive rod with common constraints.利用细长压杆微小弯曲的平衡条件和曲率计算公式,得到了统一的压杆转角方程和挠曲线方程,并将其用于几种常见支承条件的细长压杆,方便地求得了相应压杆的临界压力欧拉公式。
3.In elastic mechanics, it is common practice to calculate critical loads in buckle of thin plates by means of double triangle series.弹性薄板屈曲的临界压力计算,在弹性力学中一般都是采用双三角级数解法,计算过程比较复杂,工程中应用不方便。
6)critical compression ratio临界压缩比
1.From the ample computational results,the relationships among maximum entrainment ratio,expansion ratio and critical compression ratio were concluded.在以往大量数值模拟工作的基础上,总结出了一定喷射器结构时,喷射器的最大喷射系数、膨胀比及临界压缩比三者之间的关系,并给出了膨胀比与喷嘴出口马赫数之间的幂指数关系。
2.Two compound parameters, expansion ration and critical compression ratio, are introduced to conc.并给出喷嘴出口马赫数与喷射器膨胀比和临界压缩比的关系式。
延伸阅读
超临界压力锅炉超临界压力锅炉supercritical pressure boiler ehoollnJ一e yol一guolu超临界压力锅炉(supereritieal pressure boil-er)主蒸汽压力超过临界压力22.12 MP。的锅炉称为超临界压力锅炉。通常大容量超临界压力电站锅炉的主蒸汽压力定在24.5 MPa左右，也有比之更高的。当主蒸汽压力达到27 MPa以上时(见蒸汽参数)，又称为超超临界压力锅炉(ultra super eritiealPressure boiler)。发展超临界或超超临界压力机组都是为了更有效地提高火力发电厂的经济性，因此对超临界压力锅炉还伴随着采用更高的汽温和更大的锅炉容t。 妞临界压力锅炉技术特性由于水和蒸汽的压力超过临界压力后不可能有汽水双相混合物共存，因此超临界压力锅炉只能采用没有锅筒的直流锅炉。超临界压力也体现了当代电站锅炉最先进的技术。与亚临界锅炉相比，由于蒸汽参数更高，因此在锅炉受压元件的设计时需要采用更高等级的材质，并需要更完善的强度设计和寿命分析;由于它是直流锅炉，因此其水冷壁系统的设计与锅筒式锅炉有很大区别，并且还需要设t一套起动系统;由于超临界压力锅炉往往采用变压运行，因此在锅炉性能设计时还要兼顾超临界和亚临界各种不同运行工况时的特点，保证锅炉安全经济运行。此外，超临界压力锅炉在给水品质、自控以及防止高温部件高温腐蚀等方面，都有着更高的要求。 超临界压力锅炉水冷盛与亚临界压力锅炉相比，超临界压力锅炉最大特点体现在水冷壁系统的设计方面.当代超临界压力锅炉水冷壁设计必需体现超临界、直流锅炉与变压运行的三大要素.水冷壁管圈型式、质t流速、热偏差、流量分配等都是超临界压力锅炉水冷壁设计的关键因素。 水冷壁管圈型式超临界压力锅炉目前常用的管圈型式分为螺旋管圈和垂直管圈两大类型。螺旋管圈水冷壁管与水平线成一定倾角，从锅炉底部沿炉膛四周螺旋式盘绕上升，直至炉膛上部折焰角与炉膛出口处为止，通常盘绕1~2圈，螺旋倾角在100~2护之间。垂直管圈与通常的锅筒式锅炉相似，从冷灰斗至炉顶水冷壁管均作垂直布置，并且为满足变压运行需要，往往采用小管径一次上升式管圈。这两种型式在当代大容t超临界压力锅炉上都得到了广泛采用，二者在水冷壁结构设计、制造和安装等方面各有优缺点，但只要设计合理，都可以满足锅炉运行性能的要求。 质t流速超临界压力锅炉水冷壁管内质量流速的合理选取十分关键，是关系到锅炉安全经济运行的重要因素.对于螺旋管圈，可以通过合理选择管径、根数和姗旋倾角等来确定合理的质量流速。
