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 United States 54 36.5%
2 China 45 30.4%
3 Netherlands 19 12.8%
4 Canada 12 8.1%
5 Russia 6 4.1%
6 Portugal 2 1.4%
7 Australia 2 1.4%
8 Mauritius 2 1.4%
9 France 2 1.4%
10 Germany 1 0.7%
11 India 1 0.7%
12 Moldova, Republic of 1 0.7%
13 Sweden 1 0.7%