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| 曲率常数; 标量场的拉普拉斯算子 | |||
| 拉普拉斯算子; 拉普拉斯算符; 调和量算子 | |||
| 二阶微分参数; 拉普拉斯参数; 拉普拉斯微分算符 | |||
| лапласиан: 9 phrases in 4 subjects |
| Electronics | 5 |
| General | 2 |
| Mathematics | 1 |
| Technology | 1 |
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