1) critical pressure ratio
压比临界点
1.
In the study of flow oscillation and discrete frequency noise of impinging jet, it is found that there is a critical pressure ratio for a given nozzle and a nozzle-to-plate distance.
发现对于给定的喷嘴和冲击距离 ,存在一个压比临界点 ,当压比高于此临界点值时 ,流场振荡和离散频率噪声被显著抑制乃至消失。
2) 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。
3) 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。
4) 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。
5) critical back pressure ratio
临界背压比
6) critical pressure differential ratio
临界压差比
补充资料：临界点干燥法
分子式：
CAS号：
性质：扫描电镜样品的一种处理方法。某些样品(如生物样品)因其表面附有黏液或体内的水分等，用扫描电镜观察前需进行干燥处理。普通干燥方法常因试样受到液体表面张力影响而变形，影响观测结果㈠临界点干燥法则将试样与碳酸混合，放于加压容器中加热，在31℃，0.73MPa的临界点时，碳酸逐渐放出CO2而使样品得以干燥又不改变样品表面形貌。
CAS号：
性质：扫描电镜样品的一种处理方法。某些样品(如生物样品)因其表面附有黏液或体内的水分等，用扫描电镜观察前需进行干燥处理。普通干燥方法常因试样受到液体表面张力影响而变形，影响观测结果㈠临界点干燥法则将试样与碳酸混合，放于加压容器中加热，在31℃，0.73MPa的临界点时，碳酸逐渐放出CO2而使样品得以干燥又不改变样品表面形貌。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条