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 278 47.6%
2 United States 176 30.1%
3 Netherlands 73 12.5%
4 Germany 31 5.3%
5 Canada 9 1.5%
6 France 4 0.7%
7 Argentina 2 0.3%
8 Australia 2 0.3%
9 India 2 0.3%
10 South Africa 2 0.3%
11 Ukraine 1 0.2%
12 Singapore 1 0.2%
13 Luxembourg 1 0.2%
14 Hong Kong 1 0.2%
15 Austria 1 0.2%