多孔砖砌体抗压强度随着孔洞率的增加而减少。
The strength of perforated brick masonry decreases with the increasing of void ratio.
并指出，提高材料抗多冲疲劳的强度将是减少钎头断裤率，延长其使用寿命的有效途径。
It should be pointed out that upgrading the strength of materials to resist multi-shock fatigue is an effective approach to reduce the socket-breakage rate as well as to improve bit's service life.
碳化减少碳化区和未碳化区孔径和孔隙率的同时也影响混凝土质量、强度和碱度等其它性能。
Carbonation reduces the pore size distribution and porosity of carbonated and non-carbonated part, and affects the concrete weight, strength, alkalinity et al.
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