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 218 41.5%
2 China 129 24.6%
3 Netherlands 83 15.8%
4 Germany 33 6.3%
5 France 17 3.2%
6 Canada 16 3%
7 Hong Kong 11 2.1%
8 Portugal 7 1.3%
9 6 1.1%
10 Bolivia, Plurinational State of 2 0.4%
11 Belgium 1 0.2%
12 Russia 1 0.2%
13 Taiwan 1 0.2%