截面,或者腰围尺寸,开根号比例增长,强度就够;
so, height^2----weight
截面,或者腰围尺寸,开根号比例增长,强度就够;
so, height^2----weight
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