BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 62 46.3%
2 United States 29 21.6%
3 Germany 11 8.2%
4 Netherlands 8 6%
5 Czech Republic 5 3.7%
6 France 4 3%
7 Korea, Republic of 4 3%
8 United Kingdom 4 3%
9 Hong Kong 2 1.5%
10 India 2 1.5%
11 Japan 1 0.7%
12 Canada 1 0.7%
13 Romania 1 0.7%