空隙率

通过改变浸泡时间、固液比和浸泡液pH值进行浸泡实验；通过改变空隙率（煤矸石、粘土和砂砾的质量比）进行动态淋溶实验。

Soaking time , solid-liquid ratio and pH of soaking solution were changed in the soaking experiment , and gangue porosity ( the mass ratio of gangue , clay and gravel ) were changed in the dynamic leaching experiment .

随着FG的降解，复合材料的空隙率将提高，有望加速CPC的降解和骨的生长，用作生物活性分子的注射性载体。

With the degradation of FG , the porosity will increase , which can speed up the degradation of CPC and bone growth , as an injectable carrier for organism active molecule .

Air（初三适用）初始空隙率对沥青混合料性能影响的试验研究

Influence of Initial Air Void on Performance of Asphalt Mixtures

研究了SiC粉料的空隙率对晶体生长的影响。

Influences of different porosities in SiC powder source on as-grown crystal are investigated .

基于ECT传感器和模式识别的气液两相流空隙率测量新方法研究

Study on New Method for Voidage Measurement of Gas-liquid Two-phase Flow Based on ECT Sensor and Pattern Recognition Theory

在特定的床结构条件下，快速流化床截面平均空隙率轴向分布曲线可能发生变异，即在出口结构有强约束作用时，可能呈反C，在入口结构有弱约束作用时，可能呈S型。

With special bed structures , the basic axial average voidage distribution profile may change into a C shape with strong exit restrictions or , into a S shape with weak solids inlet restriction .

在此基础上提出了基于HHT与SVM的气液两相流空隙率估计方法。

From this , void fraction estimate means for gas-liquid two-phase flow based on HHT and SVM was put forward .

研究表明：混合料饱和度和空隙率对K值，即沥青混合料疲劳寿命有较大影响；

The results show that percent air voids and percent of voids filled with asphalt in asphalt mixtures have great influence affect K value which indicates the extension of fatigue life .

试验中使用的膜为不锈钢金属膜，将该膜作为颗粒床层对其几何特性进行了研究，分别求出金属膜的比表面α、空隙率ε、当量直径de等几何参数。

Membrane used in tests is stainless steel metal membrane , which is regarded as granular-bed to study their geometric parameter , such as the specific surface of the metal membrane ultrafiltration ;

该方法省去了常用ECT方法测量空隙率时复杂而耗时的图像重建过程，提高了空隙率测量的实时性。

This new method implemented voidage measurement without complicated and time-consuming image reconstruction . And thus the real-time performance of voidage measurement was improved .

结果表明：CA比对沥青混合料的空隙率、矿料间隙率、粗集料骨架的形成、抗车辙性能和压实性能具有显著影响；

The results show that CA ratio has a significant effect on percent air voids , VMA , formation of the coarse aggregate skeleton , rutting resistance and densification characteristics of asphalt mixture ;

近年来填充床反应器CFD数学模型韵几个研究重点是动量交换系数、毛细管压力以及床层空隙率的非均匀分布性。

Several of the focuses of CFD model in packed-bed reactors were studied , namely , the momentum exchange coefficient , the capillary pressure and the void fraction .

基于电容层析成像（ECT）传感器和模式识别理论，提出了一种新型的气液两相流空隙率测量方法。

Based on electrical capacitance tomography ( ECT ) sensor and pattern recognition theory , a new method was proposed for voidage measurement of gas-liquid two-phase flow .

采用Tikhonov正则化原理和ART算法相结合的组合型新图像重建算法来实现整体空隙率的测量。

A new hybrid image reconstruction algorithm which combines Tikhonov regularization theory with ART ( Algebraic Reconstruction Techniques ) algorithm was presented to implement the global voidage measurement of gas-solid fluidized bed .

最终得到纤维体积分数约为40vol%、热解碳界面层厚度约0.2μm和空隙率为17vol%的复合材料，表面SiC涂层厚度为50μm。

The composites contained 40 vol % fiber and 17 vol % porosity . The thickness of the pyrocarbon on fiber is about 0.2 μ m and SiC coating thickness 50 μ m on specimens surface .

结合粘温曲线与空隙率-温度法，综合确定了WMA的拌合、压实温度。

Combined of viscosity-temperature curve and void-temperature method , the paper determines the mixing and compaction temperature of WMA .

利用三维粒子动态分析仪（PDA）测量了流化床冷态模型中的三维粒子速度，测量了循环流化床内的湍流能量，也对粒子的轴向空隙率进行了测量。

The three-dimensional particle velocity in a CFB cold model , the turbulent flow energy in the CFB and particle vertical voidage are measured with a three-dimensional particle dynamic analyzer ( PDA ) .

介孔TiO2此表面积大，空隙率高，热稳定性好，在光催化、分离、水处理和空气净化等领域具有广阔的应用前景。

Mesoporous titanium oxide has high specific surface areas , large pore volumes and great thermal stability , thereby offering considerable potential for wide use in photocatalysis , separation application , waste-water treatment and air cleaning .

对空隙率法的控制范围进行了进一步数据和理论分析后，确定了空隙率法控制潮湿多雨地区路基压实的控制范围为Va≤8%。

With further analyzed data and theory analyzed of the range of void rate method , it confirmed that the control range of void rate standard was Va ≤ 8 % .

从混凝土钙溶蚀机理出发，利用Fick第二定理，结合液相钙浓度、混凝土空隙率、扩散系数三个模型，建立扩散和溶解方程。

Diffusing and dissolubility equations were derived from aqueous calcium distribution law , and formulations of concrete porosity and effective diffusion coefficient , based on Fick 's second law .

利用一种振动流化床装置实现了对Geldart分类中C类粉体的正常流化，研究了振动参数对床层空隙率的影响。

Particles of the group c in Geldart 's classification are fluidized fairly well in a vibro - fluidized bed . The effect of vibrational parameter on the bed voidage has been mainly discussed in this paper .

基于16电极ERT电导传感器，利用最小二乘支持向量机（LS-SVM）回归方法，提出了一种气水两相流空隙率测量新方法。

Based on the 16-electrode ERT conductance sensor , a new method is proposed for void fraction measurement of air-water two-phase flow with the Least Squares Support Vector Machine ( LS-SVM ) regression method .

研究了阳离子性聚丙烯酰胺（CPAM）对水泥净浆抗折强度、抗冲击强度、容重、空隙率和吸水率的影响。

The effect of cationic polyacrylamide ( CPAM ) on the flexural strength , inpact resistance , unit weight , porosity and water absorption of modified cement pastes has been studied .

在低温两相流空隙率测定试验中，要求温度测量精度≤±0.1K。

The accuracy of temperature measurement in the void test of low temperature two-phase-flow must be ≤± 0 . 1K .

结果表明：不同浓度CMC溶液下的气液弹长度分布均可以用正态分布描述。垂直管内向上气液流动的分析（Ⅲ）&弹状流中液体段空隙率计算

The length distributions of Taylor bubble and liquid slug are in accordance with normal distribution at the variety of concentration . FLOW PATTERN ANALYSIS FOR UPWARD-GAS-LIQUID FLOW IN A VERTICAL TUBE (ⅲ) & CALCULATION OF VOID FRACTION IN THE LIQUID SLUG

对热处理后的TiO2薄膜表面形貌、矿物相、晶粒结构、元素成分等特性进行了分析，并考察了比表面积和空隙率两项理化性能指标。

After the heat treatment , the form , mineral phase , grain structure , element composition and other feature of the TiO_2 membrane surface were analyzed . The physic-chemical performance index of the specific surface area and porosity rate were checked .

研究表明：我国的计算方法之一，用空隙率与总沥青用量的和计算的VMA明显偏大，有时难以排除不满足最小VMA要求的混合料。

The results show that the VMA value computed by percent air voids in bituminous mixture plus percent total bitumen volume in bituminous mixtures is bigger than the VMA value by America method .

在直径90mm快速流化床内，考察了气体速度和固体循环速率对径向空隙率分布的影响。

The influence of gas velocity and solid flow rate on radial voidage profile has been investigated in a 90-mm diameter fast fluidized bed .

在进行车辙试验和贯入试验之前，计算分析了平行试件空隙率VV的标准偏差，以确保试验过程以及试件本身不会影响两种试验的结果。

Before rutting test and penetration test , standard deviation of VV of the parallel specimens is analyzed to ensure that two kinds of the result of the test are not influenced by the process and the specimen itself .

基于ECT传感器，结合模式识别理论，提出了一种新型的气液两相流空隙率测量方法，利用欧氏距离测度对一组测量值进行模板匹配，从而得到该组测量值所对应的空隙率值。

Based on ECT sensor and pattern recognition theory , a new method was proposed for voidage measurement of gas-liquid two-phase flow . One of three template databases was selected by flow regime classification . The voidage was obtained by template matching with Euclid distance measure .