体积积分: space integralvolume integralvolume integration
孔隙体积: pore volumeporvpvvoid contentvoid volumevoids volumevolume of voids
Example Sentences:
1.
Standard test method for bulk specific gravity and density of compacted bituminous mixtures using automatic vacuum sealing method 用自动真空密封法测量压实的沥青混合料的毛体积比重和密度的标准试验方法