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排名 | 国家/地区 | 数量 | 占比 |
1 | China | 141 | 51.5% |
2 | United States | 59 | 21.5% |
3 | Canada | 37 | 13.5% |
4 | 10 | 3.6% | |
5 | Germany | 8 | 2.9% |
6 | United Kingdom | 8 | 2.9% |
7 | France | 3 | 1.1% |
8 | Mongolia | 2 | 0.7% |
9 | Netherlands | 2 | 0.7% |
10 | South Africa | 1 | 0.4% |
11 | Ireland | 1 | 0.4% |
12 | Japan | 1 | 0.4% |
13 | Finland | 1 | 0.4% |
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