BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 144 56.2%
2 United States 49 19.1%
3 Germany 36 14.1%
4 Canada 8 3.1%
5 Mexico 3 1.2%
6 Netherlands 2 0.8%
7 Romania 2 0.8%
8 Singapore 2 0.8%
9 Finland 2 0.8%
10 France 2 0.8%
11 Malaysia 2 0.8%
12 Mauritius 1 0.4%
13 India 1 0.4%
14 Japan 1 0.4%
15 Ukraine 1 0.4%