... gas mixture at given volume ratio 气体比例混合 wing-board 翼缘板 low porosity 低孔隙率 ...
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The typical characters of the spherical pore Al alloy foam with low porosity are listed as following: Ps between 65% and 80%, ds below 2 mm, δs above 2 mm and spherical pore.
新型泡沫铝合金其孔结构的典型特征为:低孔隙率(Ps=65%~80%),Ss为球形或类球形,ds小于2mm,δs大于2mm,。
参考来源 - 新型球形孔低孔隙率泡沫铝合金制备及相关性能研究·2,447,543篇论文数据，部分数据来源于NoteExpress
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.
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