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 386 64.8%
2 United States 123 20.6%
3 Germany 29 4.9%
4 Canada 23 3.9%
5 Netherlands 12 2%
6 Hong Kong 8 1.3%
7 Taiwan 5 0.8%
8 Singapore 4 0.7%
9 India 2 0.3%
10 Russia 1 0.2%
11 Iceland 1 0.2%
12 Czech Republic 1 0.2%
13 United Kingdom 1 0.2%