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 57 35%
2 China 54 33.1%
3 Netherlands 14 8.6%
4 France 11 6.7%
5 Germany 10 6.1%
6 Russia 8 4.9%
7 Singapore 2 1.2%
8 Canada 2 1.2%
9 Moldova, Republic of 2 1.2%
10 Finland 2 1.2%
11 India 1 0.6%