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- blood capilllary density ratio 血液毛细血管密度比率
- 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。
- 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
- She was sick at the sight of the blood. 她一见到血就感到恶心。
- It was more than flesh and blood could bear. 这是血肉之躯无法忍受的。
- 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。
- A haemophiliac's blood will not clot properly. 血友病患者的血液凝固不良。
- Douglas put away Collins in cold blood. 道格拉斯蓄意杀死了柯林斯。
- Blood was trickling out of a cut near his ear. 血从他耳边的伤口往外滴。
- Don't argue with one who is in hot blood. 不要和正在气头上的人争论。
- The insect bit him and drew blood from his arm. 那只昆虫叮在他的手臂上吸血。
- His cruelty to his children makes my blood boil. 他残酷地对待孩子，使我非常愤怒。
- The wounded man was covered with blood. 这个受伤的人身上全是血。
- There was a gash of blood from the wound reopening. 伤口再次裂开时血流如注。
- The blood coursed through the arteries. 血液在动脉血管中循环。
