水流到下遊是增加流速,也就是轉化成動能, 這些動能又消耗在衝刷泥沙。
升溫得有升溫的機製吧?
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