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 562 45.5%
2 United States 279 22.6%
3 Netherlands 200 16.2%
4 Germany 67 5.4%
5 France 46 3.7%
6 Canada 29 2.3%
7 Hong Kong 15 1.2%
8 Korea, Republic of 11 0.9%
9 Taiwan 6 0.5%
10 Sweden 4 0.3%
11 Brazil 4 0.3%
12 3 0.2%
13 Ukraine 3 0.2%
14 United Kingdom 3 0.2%
15 Singapore 2 0.2%
16 Czech Republic 1 0.1%