线性二阶矩 linear moment: 线性矩second moment: 次级偶甩; 二次矩; 二阶矩量second moment of area;moment of inertia: 截面惯性矩linear moment of inertia: 线性转动惯量moment of linear impulse: 线冲量矩下载手机词典可随时随地查词查翻译