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 481 49.7%
2 United States 185 19.1%
3 Netherlands 158 16.3%
4 Germany 69 7.1%
5 Canada 23 2.4%
6 France 12 1.2%
7 Hong Kong 8 0.8%
8 Korea, Republic of 8 0.8%
9 Russia 6 0.6%
10 India 5 0.5%
11 Ireland 3 0.3%
12 Ukraine 3 0.3%
13 Singapore 2 0.2%
14 Belarus 2 0.2%
15 Taiwan 1 0.1%
16 Norway 1 0.1%
17 United Kingdom 1 0.1%