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。
2
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。
3
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.