这样的玩具早就有了。太阳能和风能的核心问题是能量密度不够，还需要取决于天气，实际上只能当玩具演示用。

来源: hkzs 于 2024-11-29 10:26:00 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.