noun 下载 🔗分享 角动量，动量矩。 The vector product that describes the rotary inertia of a system about an axis and is conserved in a closed system. For an isolated rigid body, it is a measure of the extent to which an object will continue to rotate in the absence of an applied torque. Examples : "A spinning ice skater pulls their arms in to decrease their moment of inertia, causing their angular momentum to stay constant, which makes them spin faster. " 花样滑冰运动员旋转时会把手臂收回来，这样能减少他们的转动惯量，因为角动量保持不变，所以他们会转得更快。 physics energy mass system theory 与AI对话词汇游戏阅读练习
