
http://jpkc.cdutetc.cn/hgx/physics/1.2.htm 瞬时加速度(加速度)时,平均加速度的极限值,或称为速度对时间的一阶层数(位矢对时间的二阶导数)。
WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.
Copyright ©1998-2025 wenxuecity.com All rights reserved. Privacy Statement & Terms of Use & User Privacy Protection Policy