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 163 58%
2 United States 57 20.3%
3 Germany 34 12.1%
4 Canada 6 2.1%
5 Taiwan 4 1.4%
6 Ukraine 3 1.1%
7 Russia 3 1.1%
8 Hong Kong 3 1.1%
9 India 2 0.7%
10 Bulgaria 2 0.7%
11 Netherlands 2 0.7%
12 Singapore 1 0.4%
13 Italy 1 0.4%