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 55 41.7%
2 United States 27 20.5%
3 Netherlands 18 13.6%
4 Russia 16 12.1%
5 Germany 4 3%
6 France 3 2.3%
7 Romania 3 2.3%
8 Italy 2 1.5%
9 Moldova, Republic of 1 0.8%
10 India 1 0.8%
11 South Africa 1 0.8%
12 Canada 1 0.8%