1) porosity
[英][pɔ:'rɔsəti] [美][pɔ'rɑsətɪ]
孔隙率
1.
Porosity test in carbon composites based on a new ultrasonic attenuation method;
碳纤维复合材料孔隙率超声衰减测试研究
2.
Quantitative measurement of ceramic uranium dioxide porosity and pore distribution;
陶瓷UO_2孔隙率与孔隙分布的定量测量
3.
An experimental study on the porosity measurement of medium and high consistency pulp;
中高浓纸浆孔隙率测定的研究
2) void content
孔隙率
1.
A new method based on pulse echo method was proposed for nondestructive testing of void content of carbon fibre reinforced composite material.
用超声反射法对碳纤维复合材料试块进行孔隙含量检测,探讨基于超声反射波频谱分析理论建模与实验标定的碳纤维复合材料孔隙率测试方法。
2.
Aiming at the test of void content of carbon-fiber reinforced composite used in aeronautic industry, developed a portable ultrasonic non-destructive test system.
针对航空工业碳纤维复合材料板材的孔隙率检测,研制了便携式超声无损检测系统。
3.
The attenuation coefficient shows approximately linear behaviour with frequency over the frequency range used,and the attenuation slope increases with the void content.
结果表明:超声衰减系数与频率之间存在线性关系,而且其斜率随孔隙率的增大而增大。
3) void ratio
孔隙率
1.
A mix proportion design method of pervious concrete is provided,of which total void ratio is the first design parameter and compressive strength is the second one.
根据透水混凝土的结构特征,对其配制参数和配合比计算方法进行了研究,提出了以总孔隙率为第一设计参数,抗压强度为第二参数的配合比设计方法。
2.
The methods for testing density of asphalt macadam with large void ratio are analyzed,the defect of wax sealing method and volume method are also discussed,these two methods were just the ones recommended by specifications for testing bulk density of asphalt macadam,and the method of wax sealing is modified.
分析结果表明,蜡封法计算的孔隙率平均值为5。
3.
The influences of the void ratio, the bulk modulus, the permeability coefficient to the longitudinal and transverse wave velocity are studied.
基于饱和多孔介质波动理论平面波解,分析了频率对纵、横波速度和衰减的影响以及孔隙率、体积模量、渗透系数等参数对纵、横波速度的影响,得出了波速、衰减具有频散的特性及孔隙率是影响冻土波速的主要因素等结论,据此分析了冻土超声波测试中存在的动力学特性规律不明显的原因,并提出了改进建议。
4) porosities
[英][pɔ:'rɔsiti] [美][po'rɑsətɪ]
孔隙率
1.
The relationships between foam porosities and the processing parameters are studied.
采用粉末致密化发泡(PCF)工艺制备泡沫铁,研究了各工艺参数对泡沫铁制备及其孔隙率的影响规律,得出了实验条件下的优化工艺参数配置,对制备过程及影响孔隙率的因素进行了分析,获得了泡沫铁的优化制备工艺及各工艺参数对孔隙率的影响规律,对泡沫铁的研究与开发具有显著意义。
5) pore ratio
孔隙率
1.
It analyzes influencing of fly-ash to durability of concrete from alkali aggregate effect、pore ratio、free shrinkage、crack-resistant under constraint condition,it indicates it is important influencing factor that delay service life of concrete when ensure durability of concrete.
从碱集料反应、孔隙率、自由收缩、约束条件下抵抗开裂、混凝土强度等方面系统地分析了粉煤灰对混凝土耐久性的影响,表明了保证混凝土的耐久性是延长混凝土寿命的重要因素之一。
2.
The compressive modulus,which characterizes the deformation behaviors of loose rock blocks under confining constraint,is related with many factors,such as the pore ratio,rock strength and so on.
通过对松散岩块进一步的压实试验研究,得出了松散岩块的侧限压缩模量与孔隙率及岩块抗压强度之间的关系。
6) high porosity
高孔隙率
1.
Preparation of porous Al with high porosity by infiltration method;
渗流法制备高孔隙率多孔铝
2.
The porous ceramic filtration materials with high porosity were fabricated by using floating beads as the aggregate and millet/polystyrene pellet and carbon powder as the pore-forming agent.
43 %的高孔隙率多孔陶瓷滤料。
补充资料：孔隙率
分子式：
CAS号：
性质：又称孔隙度。是多孔结构物质的特性之一。指催化剂颗粒内的孔体积占催化剂颗粒体积的分数。用θ表示。=1-ρ颗/ρ真=Vgρ颗。其中Vg是比孔容，ρ颗，ρ真，分别为颗粒密度和真密度。注意不要与空隙度混淆，它是单位质量催化剂颗粒间堆积空隙(空隙体积)与总堆积体积之比，反映堆积的松密程度。此外，孔隙度亦指岩石中未被矿物质占据的空间的量度。即总空隙空间在整个岩石体积中所占的百分数。
CAS号：
性质：又称孔隙度。是多孔结构物质的特性之一。指催化剂颗粒内的孔体积占催化剂颗粒体积的分数。用θ表示。=1-ρ颗/ρ真=Vgρ颗。其中Vg是比孔容，ρ颗，ρ真，分别为颗粒密度和真密度。注意不要与空隙度混淆，它是单位质量催化剂颗粒间堆积空隙(空隙体积)与总堆积体积之比，反映堆积的松密程度。此外，孔隙度亦指岩石中未被矿物质占据的空间的量度。即总空隙空间在整个岩石体积中所占的百分数。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条