However the synthetized composites have high porosity (20%-50%), which prohibits its use as structural material.
但是，该技术合成的复合材料一般含有较高的孔隙率(20% - 50%)，不能作为结构材料直接使用。
The design was developed through custom computational protocols of structural formfinding, descriptive geometry, and stress flowdriven porosity.
这项设计通过自定义的计算协议结构塑形，画法几何和应力穿孔技术被开发出来。
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.
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。
The growth of structural fracture is controlled by such factors as lithology, porosity, lamellation and local structures, and the regional fracture controlled mainly by the regional stress field.
构造裂缝的发育受岩石本身的力学性质以及局部构造制约，区域裂缝则与区域应力场强度有关。
Porous metal parts differ from standard P/M structural parts in that they are pressed at lower pressures and may tight mesh cuts of powder in order to achieve specified porosity requirements.
多孔金属零件与标准P/M结构零件不同他们被按以低压，并且也许紧紧捕捉粉末裁减为了达到指定的多孔性要求。
The formation of Dachigan steep structural zone not only generates many fissures in Upper Carboniferous, but also makes the porosity of Upper Carboniferous higher in the core of these anticlines.
大池干井构造带的形成不仅在石炭系内形成了众多的裂缝，而且使背斜核部的孔隙度增高。
The effects of the structural parameters such as cell size and porosity on the electrical conductivity of aluminum foams were investigated in this paper.
研究了孔隙率及孔径的变化对开孔泡沫铝导电性的影响。
The effects of the structural parameters such as cell size and porosity on the electrical conductivity of aluminum foams were investigated in this paper.
研究了孔隙率及孔径的变化对开孔泡沫铝导电性的影响。
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