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 329 68.7%
2 United States 74 15.4%
3 Germany 41 8.6%
4 Canada 14 2.9%
5 Japan 4 0.8%
6 Netherlands 3 0.6%
7 Hong Kong 3 0.6%
8 Russia 3 0.6%
9 Taiwan 3 0.6%
10 Finland 2 0.4%
11 Norway 1 0.2%
12 Romania 1 0.2%
13 Moldova, Republic of 1 0.2%