弹簧由镍钛合金（Nitinol）制成，加热时缩回原始形状。
- 两个滑轮用不同尺寸的齿轮连接
- 两个惰轮
- 温水，冰水
- 弹簧在冷水中膨胀
- 弹簧在温水中收缩
形状记忆金属制作冷热水发动机
2018年8月28日
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