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 455 38.3%
2 United States 282 23.7%
3 Netherlands 240 20.2%
4 Germany 79 6.6%
5 France 75 6.3%
6 Canada 22 1.9%
7 Korea, Republic of 12 1%
8 Russia 5 0.4%
9 India 5 0.4%
10 Taiwan 3 0.3%
11 United Kingdom 2 0.2%
12 Mexico 2 0.2%
13 Hong Kong 2 0.2%
14 Chile 2 0.2%
15 Finland 1 0.1%
16 Singapore 1 0.1%