free-fall meaning in English
自由落 (物理)
自由落体
自由投放
自由下落
Examples
- Free - falling : skydiving lures young and old - altoona mirror
时间是不错为储款-多伦多星 - Free - fall games
苹果大作战小游戏 - Extremely strong load - transfer trusses inserted every 30 stories or so can isolate structural damage and avoid free - fall collapses
每30层楼安装一个可以转移负重的坚固桁架，因此结构的破坏就会局限在一处，使大楼不致于全面崩塌。 - In this paper the elementary analysis of the vibration of the earth surface collided by a free - falling hammer , including the estimation of the collision force and the vertical displacement , is presented
摘要本文对落锤撞击作用下的地表振动作了初步分析，包括撞击力的估算和地表位移的计算等。