equivalent mass matrix

• 等效质量阵

equivalent mass matrix的用法和样例：

例句

1. The lumped mass matrix is a diagonal matrix.
   集中质量阵是一个对用阵。
2. After that, I add hydro-coefficients to the matrix of the structure to compute the displacement.
   之后，将水动力附加系数加到结构的刚度阵和质量阵中进行求解。