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- vapour pressure ratio 蒸汽压力比
- Vapour pressure is an important product specification. 蒸气压是一个重要的产品规格。
- Ice possesses a lower equilibrium vapour pressure than water. 冰具有比水低的平衡蒸汽压。
- The most accurate observations are made when we observe the light emitted when the vapour pressure is low. 当蒸气压很低时,可以对原子所发射的光谱作出最精确的观测。
- It is practically immiscible with water, has a high boiling point and low vapour pressure. 它特别不溶于水,沸点更高,蒸汽压更低。
- The four properties, vapour pressure lowering, freezing point depression, boiling elevation, and osmotic pressure, are known as the colligative properties of solutions. 溶液的这四个特性:蒸汽压下降、凝固点降低,沸点升高和渗透压,称为溶液的依数性。
- Percentage ration of the actual vapour pressure in the air to the saturation vapour pressure with respect to water at the same temperature and pressure. 空气中的实际水气压与在相同温度和气压下的水面饱和水气压的百分比。
- The doctor is measured with mercuric tonometer, when the hematic pressure ratio of Ms.Wen sees a doctor last even tall. 医生用水银血压计一量,温女士的血压比上次看病的时候还要高。
- Another method to increase the pressure ratio prec/p is to increase the temperature and Mach number of the eject gas. 提高引射气体的温度及马赫数,也可增加扩压比。
- The correlation coefficient between plama ADH and urine-palsma osmotic pressure ratio was 0.86(P<0.05) in patients with DI. DI组确诊后一周内平均尿血渗透压值与血浆抗利尿激素水平有密切相关性 (相关系数r=0 86 ;P <0 0 5 )。
- Simone G,Roman MJ,Koren Mi,et al.Stroke volum/pulse pressure ratio and cardiovascular risk in arterial hypertension[ J ].Hypertension,1999,33:800-805. 蔡俊明;邓健忠;陈先辉.;社区干预对高血压患者卫生行为和疗效作用[J]
- Abstract: Reformation of medium, mini-scale boiler by means of single-chip computer can both heighten boiler heat efficiency to save energy, and make vapour pressure stable to implement safe moving and automatical control. 文摘:利用单片微机改造中小型工业锅炉,既能提高锅炉热效率,达到节能效果,又能使蒸汽压力稳定,运行安全可靠,实现控制自动化。
- Velocity circulations at the trailing edges of each blade-row are optimized for overall maximization of total pressure ratio and isentropic efficiency. 优化目标为总压比和绝热效率最大,决策变量为转子和静子叶排尾缘速度环量。
- Reformation of medium, mini-scale boiler by means of single-chip computer can both heighten boiler heat efficiency to save energy, and make vapour pressure stable to implement safe moving and automatical control. 利用单片微机改造中小型工业锅炉,既能提高锅炉热效率,达到节能效果,又能使蒸汽压力稳定,运行安全可靠,实现控制自动化。
- The two stage turbocharging system has much higher efficiency under most operating conditions if the pressure ratio assignment is 1:1. 在大部分工况下压比分配为1:1时,所匹配的二级增压系统效率较高;
- The shock wave compression is the latest compression technology, and attracts special attention because of high single stage pressure ratio. 激波压缩技术是目前新式的气体压缩技术,以其高的单级压比倍受关注。
- It is unfortunate that very little data exist concerning vapour pressures of solid materials which might be found in the atmosphere. 遗憾的是关于可能在大气中发现的固态物质的气压资料少得可怜。
- A concise physical picture is furnished by chemical potential curve about the law of phase equilibrium, saturated vapour pressure of curved liquid surface, evaporation and condensation etc. 通过曲线描述,提供了关于相平衡、弯曲液面饱和蒸气压以及蒸发、凝结等规律比较直观的物理图像。
- A multiobjective optimization for a two-stage axial-flow compressor design was performed for maximization of the overall adiabatic efficiency and the total pressure ratio. 针对一台两级轴流压气机,选定优化设计的目标是最大的总压比和最高的总绝热效率。
- At the end of the annular passage,shock wave occurs when the relative lift is less than 6% and the pressure ratio is less than 0.7,which causes a greater total pressure loss. 在相对升程小于6%25、压比小于0.;7后;环形通道的末端将产生激波;激波带来较大的全压损失