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 50 33.1%
2 China 49 32.5%
3 Netherlands 22 14.6%
4 Germany 10 6.6%
5 Russia 5 3.3%
6 Canada 4 2.6%
7 Hong Kong 3 2%
8 Taiwan 3 2%
9 Singapore 2 1.3%
10 Portugal 1 0.7%
11 Bulgaria 1 0.7%
12 Finland 1 0.7%