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 115 61.5%
2 United States 29 15.5%
3 Netherlands 12 6.4%
4 Germany 11 5.9%
5 Sweden 5 2.7%
6 Canada 3 1.6%
7 France 3 1.6%
8 Hong Kong 2 1.1%
9 India 2 1.1%
10 Korea, Republic of 2 1.1%
11 South Africa 1 0.5%
12 Spain 1 0.5%
13 Taiwan 1 0.5%