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 United States 52 36.6%
2 China 49 34.5%
3 Netherlands 11 7.7%
4 Germany 9 6.3%
5 Japan 5 3.5%
6 Korea, Republic of 3 2.1%
7 Taiwan 3 2.1%
8 South Africa 2 1.4%
9 India 2 1.4%
10 France 2 1.4%
11 Hong Kong 1 0.7%
12 Indonesia 1 0.7%
13 Sweden 1 0.7%
14 United Kingdom 1 0.7%