equations方程[式]equationn.相等；均衡；方程式；等式equational reduction division均等减数分裂equation of time of abstracts文摘时差equation of mass conservation质量守恒定律方程equation with small parameter小参数方程equation of national strength国力方程equation of compressible flow可压缩流体流动方程equation of the straight line直线方程equation of linear regression线性回归方程equation-of-motion method运动方程法equation of state for seawater海水状态方程