The expression of coefficient of increase in cracking resistance in prestressed torsional members is derived on the basis of concrete characteristics under biaxialstrength.
本文根据砼的双轴强度特性，导出了预应力受扭构件抗裂度提高系数的表达式。
2
When the biaxial nominal stresses are equal to each other, the mathematical relationship between loading strength and porosity can be also gained for the foamed metals under biaxial equal loads.
当双向承受的名义应力相等时，还可得到泡沫金属在双向等荷承载条件下的载荷强度与孔率的数学关系。
3
Objective To study the effects of different treatment methods on the biaxial flexural strength of hot pressable ceramic.