体积模量 Bulk modulus
（重定向自Compressive Modulus）
![压缩示意图](/Images/godic/202501/05/Isostatic_pressure_deformation5218.png")
![](/Images/godic/202501/05/BernoullisLawDerivationDiagram.svg5219.png")
![Influences of selected glass component additions on the bulk modulus of a specific base glass.[3]](/Images/godic/202501/05/SpiderGraph_BulkModulus5219.gif")
![](/Images/godic/202501/05/Wasserdruck_kompressibilitaet5219.png")
体积模量 （![K](/Images/godic/202501/05/a5f3c6a11b03839d46af9fb43c97c1885219.png")
）也称为不可压缩量，是材料对于表面四周压强产生形变程度的度量。它被定义为产生单位相对体积收缩所需的压强。它在SI单位制中的基本单位是帕斯卡。
Compressive Modulus
中文百科
英语百科
Bulk modulus 体积模量
（重定向自Compressive Modulus）
![Illustration of uniform compression](/Images/godic/202501/05/Isostatic_pressure_deformation5219.png")
The bulk modulus ( or ![B](/Images/godic/202501/05/9d5ed678fe57bcca610140957afab5715219.png")
) of a substance measures the substance's resistance to uniform compression. It is defined as the ratio of the infinitesimal pressure increase to the resulting relative decrease of the volume. Its SI unit is the pascal, and its dimensional form is MLT.