Compulsory education is an education system that the nation has universality to the children at school age which has law guarantee, equal, force, gratis and other characteristic.
义务教育是国家以法律保障对学龄儿童实施的一种具有普及、平等、强制、无偿等诸多方面特征的教育制度。
The precise critical force of a system can be deduced from the fact that the determinant of stiffness matrix of the system is equal to zero in the critical condition.
由结构刚度矩阵行列式值为零的失稳条件导出结构失稳特征方程，从而精确地确定系统临界力值。
A unit of magnetomotive force in the meter-kilogram-second system equal to the magnetomotive force around a path linking one turn of a conducting loop carrying a current of one ampere.
磁通势单位等于安培的电流通过单位线圈时产生的磁通势；等于（待查表）吉伯。
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