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排名 | 国家/地区 | 数量 | 占比 |
1 | China | 138 | 48.8% |
2 | United States | 86 | 30.4% |
3 | Canada | 19 | 6.7% |
4 | Germany | 10 | 3.5% |
5 | Japan | 7 | 2.5% |
6 | France | 6 | 2.1% |
7 | Switzerland | 3 | 1.1% |
8 | Singapore | 3 | 1.1% |
9 | South Africa | 2 | 0.7% |
10 | Turkey | 2 | 0.7% |
11 | Ghana | 2 | 0.7% |
12 | Romania | 1 | 0.4% |
13 | Russia | 1 | 0.4% |
14 | Denmark | 1 | 0.4% |
15 | Sweden | 1 | 0.4% |
16 | Slovakia | 1 | 0.4% |
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