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 165 58.3%
2 United States 43 15.2%
3 Germany 32 11.3%
4 Netherlands 13 4.6%
5 Canada 10 3.5%
6 Luxembourg 4 1.4%
7 France 3 1.1%
8 Peru 3 1.1%
9 Russia 3 1.1%
10 Sweden 2 0.7%
11 Taiwan 1 0.4%
12 Brazil 1 0.4%
13 Macao 1 0.4%
14 Moldova, Republic of 1 0.4%
15 Lao People's Democratic Republic 1 0.4%