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bubble density
相关语句
  气泡密度
     Besides,the bubble density and reflectance increased with the wake observation position approaching the target ship.
     同时,随着观测点在尾迹中的位置距目标船的接近,气泡密度不断增大,反射率也随之增强。
短句来源
     The effect of reducing cavitation damage in high-speed flow structure not only relate with entrained air concentration,but also relate with air bubble density has been discovered in recent research.
     近年研究表明,高速水流泄水建筑物的掺气减蚀效果,不仅与掺气浓度有关,还应考虑气泡密度;
短句来源
  “bubble density”译为未确定词的双语例句
     The apparent activation energies for the growth are found to be 0.41 and 0.31 eV for HR-2 and SS321 respectively. The bubble density in HR-2 is greater than that in SS321 within whole measuring temperature range, and the onset temperature of rapid swelling is also higher. It is believed that the resistance of HR-2 to He is superior to that of SS321.
     T>0.45T_m时,He泡主要通过迁移和合并而长大,长大激活能的实验值分别为0.41eV和0.31eV,实验结果表明,HR-2钢中He泡数密度在整个测量温区内均大于SS321钢,并且材料迅速肿胀的开始温度也高于SS321钢,说明HR-2钢比SS321钢具有较好的抗氦性能
短句来源
     3) With the increase of SiO_2 content, the nucleation density, bubble density of silicone rubber foam increase, the average cell diameter decrease, the foam density declines to a minimum value and then increases.
     4) 随着羟基硅油含量的增加,硅橡胶泡沫的成核密度和泡孔密度减小,泡孔直径分布变宽,泡孔平均直径增大,泡沫密度减小。
短句来源
     Nucleation is one of the key stages during microcellular plastics,the radius of critical nucleus is the main factors for deciding the radius of bubbles of product,nucleus'density decides the bubble density also.
     气泡成核是微孔塑料连续挤出成型中的关键步骤之一 ,临界气泡核直径是影响制品中泡孔直径的主要因素 ,成核密度则是影响制品泡孔密度的主要因素。
短句来源
     Low bubble density and breakage of bubble were observed for VDC-AN-St terpolymer particles at high HCFC-141b content or at high temperature. The expanding ratio of VDC-AN-St terpolymer particles increases firstly with HCFC-141b content or temperature, and then decreases.
     VDC-AN-St共聚物颗粒的发泡倍率随着发泡剂浓度的增加或发泡温度的提高而先增加后减小,气泡将随着发泡温度的提高而最终全部破裂塌陷。
短句来源
     The influences of processing factors on bubble dimension and bubble density of sample are analyzed:a higher pressure and a higher pressure drop rate and a propriety higher temperature in the die results in smaller cells and greater cell density.
     泡孔密度随压力降速率的增大而增加; 而适当提高温度有利于减小泡孔直径、增加泡孔密度。
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  相似匹配句对
     Density of utility.
     效用密度。
短句来源
     Bubble Chamber
     气泡室
短句来源
     Density was measured.
     测量各种粉末的密度;
短句来源
     The intercepting effects of bubble curtains with different density on Fugu rubiripes
     不同密度固定气泡幕对红鳍东方鲀的阻拦效果
短句来源
     Composite Bubble Structure of High-Density Reinforced Rigid Polyurethane Foam
     高密度增强硬质聚氨酯泡沫塑料的复合泡体结构
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  bubble density
The presence of a thermal gradient during annealing does affect bubble density and recrystallization temperature.
      
This behavior is due to a significantly higher bubble density, and a resulting higher contribution of power law creep of the matrix.
      
The equations fit the observed incubation times if the bubble density is high (~107/cm2) and essentially independent of temperature (T) and hydrogen pressure (P) over a wide range.
      
We also identify processes that can provide a positive feedback between bubble density and fluid flow along the critical paths.
      
We find that the hydraulic conductivity increases monotonically with increasing capillary number up to Ca ~ 10-2, but may decrease for larger capillary numbers due to the relative decrease of bubble density in the critical pores.
      
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Nucleation and growth of He bubbles at different annealing temperatures T≤1023 K in stainless steels HR-2 and SS321, implanted with He~+ (40—70 keV, 1×10~(16)-6×10~(17) He~+ /cm~2), were observed under TEM. T=0.45T_m seems to be a transition temperature. The He bubbles continue mainly their nucleation at 0.3T_m

Nucleation and growth of He bubbles at different annealing temperatures T≤1023 K in stainless steels HR-2 and SS321, implanted with He~+ (40—70 keV, 1×10~(16)-6×10~(17) He~+ /cm~2), were observed under TEM. T=0.45T_m seems to be a transition temperature. The He bubbles continue mainly their nucleation at 0.3T_mbubble density in HR-2 is greater than that in SS321 within whole measuring temperature range, and the onset temperature of rapid swelling is also higher. It is believed that the resistance of HR-2 to He is superior to that of SS321.

本文利用透射电镜观察了HR-2及SS321不锈钢注入He~+并在T<1023K不同温度退火后的He泡结构,发现T=0.45T_m是一个转变点,当0.3T_m0.45T_m时,He泡主要通过迁移和合并而长大,长大激活能的实验值分别为0.41eV和0.31eV,实验结果表明,HR-2钢中He泡数密度在整个测量温区内均大于SS321钢,并且材料迅速肿胀的开始温度也高于SS321钢,说明HR-2钢比SS321钢具有较好的抗氦性能

A mechanism model of foam flow in porous media is developed in a three-dimension compositional simulator. Bubble density is solved by population balance equation; Bubble generation and coalescence rates are related to phase velocities, surfactant concentration, and capillary pressure; And gas phase mobility in the presence of foam is modified according to flowing bubble densities. Foam flow in two-layer, heterogeneous porous media is simulated. The results indicate delayed breakthrough of gas...

A mechanism model of foam flow in porous media is developed in a three-dimension compositional simulator. Bubble density is solved by population balance equation; Bubble generation and coalescence rates are related to phase velocities, surfactant concentration, and capillary pressure; And gas phase mobility in the presence of foam is modified according to flowing bubble densities. Foam flow in two-layer, heterogeneous porous media is simulated. The results indicate delayed breakthrough of gas and improved sweep profile when foam exists, and sweep efficiency is a little poor when capillary crossflow occurs.

在三维多组分模拟器上发展了泡沫驱机理模型 ,通过总量平衡方程求解泡沫的平均密度 ,泡沫的产生和聚并速度与相流速、表面活性剂的浓度以及毛管力等有关 ,泡沫存在时气相流度根据泡沫的密度作相应的修正。模拟了两层非均质模型中的泡沫驱 ,结果表明泡沫可以明显的延缓气体突破时间、改善驱替剖面 ,但泡沫驱的效果在层间有毛管窜流时稍微变差。

The relation between air bubbles density and the depth from surface of water,the wind speed at water surface is introduced in this paper.Motions of bubbles of small,intermediate and large size are also stated too.The light scattering property of bubbles is discussed and a simple method to calculate the optical property of air bubbles is clarified.In this paper,problems related to the optical methods to study air bubbles are stated.Analyses of high speed photography of bubbles...

The relation between air bubbles density and the depth from surface of water,the wind speed at water surface is introduced in this paper.Motions of bubbles of small,intermediate and large size are also stated too.The light scattering property of bubbles is discussed and a simple method to calculate the optical property of air bubbles is clarified.In this paper,problems related to the optical methods to study air bubbles are stated.Analyses of high speed photography of bubbles show that bubbles'speed is consistent with the results of theoretical calculation.All these show that detecting wakes of bubbles and tracing targets optically are feasible.

概述了水中气泡的密度与从水面算起的深度、水面的风速之间的关系 ;给出了一般情况下的小气泡、中等气泡、大气泡的运动规律 ;并阐述了气泡的光散射特性以及一种计算光学特性的简单方法 .文中详细阐述了利用光学方法来研究气泡所需涉及的问题 ,为气泡的光学特性研究指明了方向 .通过对水中气泡进行高速摄影 ,所拍气泡图像清晰明辨 ;进一步对图像的分析表明气泡运动速度与理论计算结果是一致的 .据此我们认为采用光学方法研究尾流气泡并且依此对目标进行跟踪是完全可行的

 
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