您要查找的是不是：
- vapor density ratio 蒸气密度比
- The "supersaturation ratio" is the ratio of the excess vapor density to the saturation value. “过饱和比”是超过饱和值的蒸汽密度与饱和值的比。
- The influence of density ratio on the characteristic frequency of coherent structure on the centreline of low Re number free round jet flow has been investigated with Dual PDA. 采用激光粒子动态分析仪研究了低雷诺数时密度比对自由圆射流近喷嘴区轴线相干结构特征频率的影响。
- Cumulative incidence ratio (CIR), incidence density ratio (IDR)and incidence odds ratio(IOR)can be calculated respectively in cohort study according to various study designs. 根据不同的研究设计，在队列研究中可分别估计累积发病率比（CIR）、发病密度比（IDR）和发病比值（IOR）。
- The strain energy density ratio criterion for predicting cracking direction in composite materials is proposed. The Tsai-Hill criterion and Norris criterion of composite materials are extended to predict the cracking direction in compsites. 本文提出预测复合材料中裂纹方向的比应变能密度准则;并将Tsai-Hill与Norris准则扩展来预测复合材料中的开裂方向.
- An investigation was conducted to explore the influence of density ratio and velocity ratio of mainstream/injectant upon the cooling effect of flat plane film using heat-mass transfer analogy. 摘要采用传热传质类比的方法研究主射流密度差和速度比对单排孔平板气膜冷却效率的影响。
- A cloud is a mass of vapor in the sky. 云是天空中的水汽团。
- Prediction of Saturated Vapor Density of Refrigerant Mixtures 混合制冷剂饱和气体密度的推算
- signal-to-noise power density ratio 信噪功率密度比
- carrier to spectral noise density ratio 载波噪声谱密度比
- bit energy-to-noise density ratio 比特能量噪声密度比
- Research on Saturated Vapor Density Compensator Under Varied Working Condition 变工况条件下高温高压饱和蒸汽密度补偿模型的研究
- Magnesium composites, possessing high strength to density ratios, stiffness to density ratios, excellent mechanical and physical properties, are ideal materials for defense high-tech fields. 镁合金材料有高的比强度、比刚度,优异的阻尼减震、电磁屏蔽等性能,是高新技术行业的理想材料之一。
- Chemicals that produce a noxious vapor when mixed. 化学物质混合后会放出有毒气体
- Water can be changed into vapor when heated. 水被加热时，可以变成水蒸汽。
- A liquid condensed from vapor in distillation. 蒸馏液; 馏出物在蒸馏中，从蒸汽浓缩的液体
- It is not suitable to determine the relative molecular weight of the small carbolic acids using vapor density approach 不宜用蒸气密度法确定低级羧酸的相对分子质量
- Something, such as air or vapor, that is exhaled. 散发物以气体或蒸汽形式发散出的东西
- The ratio of students to teachers is 35:1. 学生和老师的比率是三十五比一。
- The ratio of schoolboys to schoolgirls is 2 to 1. 男学生和女学生的比例是2比1。
