| 评论数 | 价值度 | |
|---|---|---|
| 12.3 机械效率 | 0 | 100% |
| 12.2 滑轮 | 0 | 100% |
| 12.1 杠杆 | 0 | 100% |
| 11.4 机械能及其转化 | 0 | 0% |
| 11.3 动能和势能 | 0 | 0% |
| 11.2 功率 | 0 | 100% |
| 11.1 功 | 0 | 0% |
| 10.3 物体的沉浮条件 | 0 | 0% |
| 10.2 阿基米德原理 | 0 | 0% |
| 10.1 浮力 | 0 | 0% |
| 9.4 流体压强与流速的关系 | 0 | 100% |
| 9.3 大气压强 | 0 | 100% |
| 9.2 液体压强 | 0 | 100% |
| 9.1 压强 | 0 | 0% |
| 8.3 摩擦力 | 0 | 0% |
| 8.2 二力平衡 | 0 | 0% |
| 8.1 牛顿第一定律 | 0 | 0% |
| 7.3 重力 | 0 | 0% |
| 7.2 弹力 | 0 | 0% |
| 7.1 力 | 0 | 0% |