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 123 49.8%
2 United States 46 18.6%
3 Germany 36 14.6%
4 Russia 8 3.2%
5 Korea, Republic of 6 2.4%
6 Japan 4 1.6%
7 Taiwan 4 1.6%
8 Turkey 3 1.2%
9 Canada 3 1.2%
10 Brazil 2 0.8%
11 Finland 2 0.8%
12 Hong Kong 2 0.8%
13 India 2 0.8%
14 Netherlands 2 0.8%
15 Singapore 2 0.8%
16 Ukraine 1 0.4%
17 Indonesia 1 0.4%