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 233 52.2%
2 United States 138 30.9%
3 Germany 32 7.2%
4 Canada 26 5.8%
5 Russia 5 1.1%
6 Japan 4 0.9%
7 Hong Kong 2 0.4%
8 Denmark 2 0.4%
9 Mexico 1 0.2%
10 Netherlands 1 0.2%
11 Singapore 1 0.2%
12 United Kingdom 1 0.2%