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| 51. | A number or symbol, often written as a subscript or superscript to a mathematical expression, that indicates |
| 指数，根指数一个数或符号，多写于数学表达式的下部或上部，表示一个有待完成的计算，或相应的次序关系，或一个相关表达的运用 |
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| 52. | among them the 1548 Bohai strait M7 earthquake occurred on its western segment and the 1948 Weihai M(subscript |
| 蓬莱－威海断裂带对历史地震和现代小震活动具有明显控制作用，其中1548年7级地震发生于断裂带西段，1948年6级地震发生于断裂带东段。 |
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