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排名 | 国家/地区 | 数量 | 占比 |
1 | China | 138 | 52.5% |
2 | United States | 67 | 25.5% |
3 | Canada | 23 | 8.7% |
4 | Germany | 9 | 3.4% |
5 | France | 8 | 3% |
6 | Japan | 5 | 1.9% |
7 | Singapore | 5 | 1.9% |
8 | Australia | 4 | 1.5% |
9 | Ukraine | 2 | 0.8% |
10 | Switzerland | 1 | 0.4% |
11 | Iran, Islamic Republic of | 1 | 0.4% |
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