研究了细集料种类、粒径大小及分布对低孔隙率砂浆强度性能的影响。
Influences of nature Particle, size and distyibution of micro-aggregates on the mechanical properties of very low porosity mortar were investigated.
在低孔隙率胶凝材料中，大量闭合孔的存在使压汞法出现大的“损失孔隙”。
A great number of the "close pores" are present in low-porosity cementitious materials, which can cause the mercury intrusion method to lose the "missing porosity".
因此，氦孔隙率可以作为低孔隙率胶凝材料的结构参数，而用压汞法可能会导致错误的结论。
Therefore, helium porosity may be used as a structural parameter for low-porosity cementitious materials, but an incorrect conclusion may be drawn if mercury porosity is used.
基于均匀化方法给出低孔隙率脆性岩石在热—力耦合荷载作用条件下的各向异性损伤模型和有效热传导特性模型。
An anisotropic damage model and an effective thermal conductivity model were presented based on homogenization techniques for low-porosity brittle rocks subjected to mechanical and thermal loadings.
结果表明：RPC具有非常低的孔隙率，其气体渗透系数比传统混凝土的低1 ~ 2个数量级。
Results indicate that RPC possesses very low porosity and its air permeability is lower by 1-2 magnitudes than that of conventional concrete.
由于黄河水的长距离搬运作用，颗粒磨圆度高、表面强度低；孔隙率高，毛细作用剧烈。
It has high psephicity, low surface strengths, high porosity and intensive capillarity because of the long transport function of the water.
在高温下玻璃相具有高粘度、高密度、低透气性和孔隙率。
A glassy phase possesses high viscosity at high temperature, high density and low permeability and porosity.
镀镍层SEM照片显示，镀镍层晶粒尺寸大小均匀，各晶粒间结合紧密，孔隙率低，耐腐蚀能力强。
The SEM photo shows that the nickel deposit has even crystal size, good adhesion, low porosity and strong corrosion resistance.
结果表明：复合稳定剂比单一稳定剂镀速高、稳定性好、孔隙率低。
Experimental results indicate that compare to single stabilizing agent, compound stabilizing agent has higher plating rate, better stability and lower porosity.
钢铁件上薄层亮镍的高孔隙率必然带来低的抗蚀性。
The corrosion resistance of high porosity is very low on the thin bright nickel plating for steel and iron works.
该类岩石以中–微风化为主，软化系数小于0.75，孔隙率、吸水率低，裂隙贯通性差，具有较大的地基潜力。
The potential bearing capacity of this rock is relatively higher, having softing coefficient less than 0.75 with low pore rate, water absorptivity, and inferior crack connection.
中值孔径、孔隙率的变化特征与孔容一致，预示了低煤级煤储层较高的基岩渗透率。
The variation of medium pore diameter and porosity factor is in accordance with that of the pore volume, showing a high permeability of low rank coal reservoirs.
岩盐是一种特殊的岩体，具有良好的流变性、裂隙少、孔隙率低、渗透率低等优良的物理性质；
The rock salt, which is a special rock mass, possesses some good physical characteristics such as the good rheological feature, the less crack, the lower porosity, and lower permeability, etc.
但是磷酸钙骨水泥作为骨组织工程应用的支架材料强度不足，而且孔隙率越高，孔径越大，强度越低，严重限制了该类材料的应用。
The higher the porosity is, the bigger the pores are and the lower the strength is. Because of all of above the material cannot be used widely.
在双对数坐标系中，由低孔隙到高孔隙整个范围，砂岩地层因素与孔隙率的关系为一个二次函数。
It was found that in double logarithmic coordinates, the relationship of formation factor and porosity is a second order function and no longer the linear formula proposed by Archie in 1940's.
在双对数坐标系中，由低孔隙到高孔隙整个范围，砂岩地层因素与孔隙率的关系为一个二次函数。
It was found that in double logarithmic coordinates, the relationship of formation factor and porosity is a second order function and no longer the linear formula proposed by Archie in 1940's.
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