density ratio
英 [ˈdensəti ˈreɪʃiəʊ]
美 [ˈdensəti ˈreɪʃioʊ]
相对密度；密度比
双语例句
- Volume is also fundamental to quality assurance, as the size of the software product is the denominator for the defect density ratio.
容积还对质量保证很重要，由于软件产品的大小是缺陷密度比率的分母。 - If dark energy density decreased over time, the acceleration rate of universal expansion would decline and potentially cease if the pressure/ density ratio reached-1/ 3.
如果暗能量的密度随时间降低，宇宙的膨胀速率将出现下降，如果其压力/密度比达到-1/3，那么宇宙的膨胀甚至会出现停滞。 - The effect of density ratio on suction surface and leading edge is more evident.
在压力面密度比对气膜孔流量系数影响较小。 - Higher density ratio could generate larger film cooling coverage.
增大密度比有利于增加气膜覆盖面积； - We suggest that better control effect of the lady beetles on cotton aphids might be gaind by regulating their density ratio.
因此，将瓢蚜比调控在一定水平上，可以更有效地发挥以瓢治蚜的生物防治作用。 - Strain Energy Density Ratio Criterion for Fracture of Bulk Amorphous Alloys
应变能密度比准则在块体非晶合金中的应用 - Further 6 sintering tests were carried out and certificated the correctness of the thermodynamics analysis. The best sintering process parameter is concluded through relationships between process parameters and bulk density, nitrogen remaining rate, strength/ density ratio.
通过6个烧结实验，证实了其热力学分析的正确性，并从工艺参数与密度变化、残氮率和比强度等关系筛选出最佳的烧结工艺参数。 - The effect of the density ratio has also been considered.
其次，研究了密度比对两相平面剪切层演化的影响。 - The RLL ( 4,13) code with low hardware complexity and high density ratio is fit for high density optical storage systems.
RLL（4,13）码的硬件复杂度低，密度率高，适用于高密度光存储系统。 - The optimal area ratio is singly related with friction loss coefficient, and it is not related to the density ratio of fluids.
最优面积比只与摩擦损失系数有关，而与流体间的密度比无关。 - 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 concept of signal-to-noise ratio and the signal-to-noise density ratio, and the impact of RFI on GPS reception are described and analyzed. The method of directly detecting RFI and locating the source of RFI is also introduced.
本文论述了信号噪声比和信号噪声密度比的概念，分析了射频干扰对GPS接收的影响，最后说明了直接检测RFI的方法以及RFI源的定位。 - The friction loss factor and the density ratio had a significant influence on the back pressure sensitivity.
摩擦损失系数和密度比对回压敏感性的影响很大。 - It is also shown that the density ratio of CO_2 salt water solution to salt water is not influenced by pressure, but increases with the concentration of CO_2 and decreases with temperature.
CO2盐水溶液密度与盐水密度之比与压力无关，但随着CO2的质量分数的增加而增大，随着温度的升高而减少。 - Effect of Initial Disturbance and Density Ratio on the Generation of Solitary Waves in a Three-layer Fluid System
三层流体系统中初始扰动和密度比对孤立波生成的影响 - The test showed that the splitting tensile strength, elastic modulus and apparent density increase with the increasing amounts of crushed stone. The property of concrete made from 80% crushed stone and 20% expanded shale meet the highest compressed strength and strength to density ratio.
试验表明：混合集料混凝土的抗劈拉强度、弹性模量和表观密度随碎石取代率增加而增大，最佳碎石取代率80%时混凝土抗压强度和比强度达到最高。 - The antigen corresponding to problem was analyzed described with immune algorithm based on evolution of antigen, to create initial antibody crowd, and to calculate density ratio and breed rate value of antibody, and to gain the best antibody on time measure.
基于抗原进化的免疫算法，分析描述问题对应的抗原，产生初始抗体群，计算抗体浓度比率和抗体繁殖率值，获得时间尺度上最佳抗体。 - In this paper, based on the random characteristic analysis of Tianjin Hospital Earthquake waves of Tangshan aftershock Three dimension acceleration power spectral density ratio have been presented.
根据唐山余震时天津医院实测地震波的随机特性分析，提出了地面运动加速度三向功率谱密度的建议比值。 - The ultimate constant Ic of cavitation erosion was discussed by comparing the calculated result with Brown method. It was known that the theoretical value of Ic should be 1. 0 and the effect of density ratio on cavitation characteristics was analyzed.
将得出的结果与布朗方法进行对比，讨论了气蚀极限常数Ic，认为Ic的理论值应为1.0，并分析了密度比对气蚀特性的影响。 - The coaxial cross jets flow field with two different angles of cross jets and four density ratios has been investigated with Dual PDA. The results show that the angle of cross jet and density ratio have important influence on the flow field.
采用DualPDA研究了2种射流交叉角度和4种密度比的同轴交叉射流的流场，发现射流交叉角度和密度比对射流流场有重要影响。 - The equivalent velocity agrees well with experimental data. This method can be used to describe the effect of angle of cross jets and density ratio on axis velocity of fully developed jet flow.
当量速度与实验结果较为吻合.对充分发展的射流，该法可较好的描述射流交叉角度、密度比对轴线上轴向速度的影响。 - The solid-fluid density ratio and the pore scale parameter are introduced to simplify the coefficients in Biot equation. These coefficients are easy to estimated and have definite physical meaning.
引入固、流体密度比和孔隙几何参数，将Biot方程系数简化为测量简单、物理意义明确的物理量。 - The solution is valid for arbitrary values of density ratio across the free interface and Froude number.
由于在线性化假定下计入了空气密度和重力的影响，本文结果可以适用於任意密度比和任意傅汝德数。 - The relationship between the density ratio of sintered bodies and temperature was investigated by SEM and Archimedean method.
研究了在氨压条件下温度对烧结致密度的影响。 - The effects of parameters such as the gas compressibility 、 the liquid viscosity 、 surface tension 、 density ratio, and velocity ratio, have been considered.
研究较全面分析了气体压缩性、液体粘性、表面张力效应、液气密度比以及滑移速度等重要因素对气体剪切流稳定性的影响。 - Parametric studies show that the axial elastic modulus of the composites increases with increasing the linear density ratio of axial yarn to braider yarns and pitch length.
参数分析结果表明，轴向弹性模量随轴纱与编织纱线密度之比和节距长度的增加呈增加趋势。 - Because of the large density ratio of water and air, the water surface can be considered as a free surface without the force from the air.
由于水和空气的巨大密度差，空气对水面的作用可以被忽略，从而可以把水面看成是自由界面。 - The effects on band gaps of density ratio, stiffness ratio, lattice constant, and thickness of pipelines and so on are discussed.
分析讨论了弹性模量比、密度比、晶格常数和管厚等对禁带频率的影响。 - BAP and phosphate decreased with plant density ratio increasing and increased with of shear stress enhance.
BAP与磷酸盐的比值随植株密度的增加而减小，随切应力增加而增大。 - The effects of the density ratio and the depth ratio on the exciting force are discussed.
考察了上下层流体密度比、深度比及下层水深对截断圆柱在内波作用下受到的激振力的影响作用。