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排名 | 国家/地区 | 数量 | 占比 |
1 | China | 307 | 76.4% |
2 | United States | 64 | 15.9% |
3 | Germany | 10 | 2.5% |
4 | Japan | 10 | 2.5% |
5 | Netherlands | 3 | 0.7% |
6 | Norway | 2 | 0.5% |
7 | Mongolia | 2 | 0.5% |
8 | Russia | 1 | 0.2% |
9 | South Africa | 1 | 0.2% |
10 | Argentina | 1 | 0.2% |
11 | Australia | 1 | 0.2% |
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