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 173 57.5%
2 United States 59 19.6%
3 Germany 30 10%
4 Hong Kong 7 2.3%
5 Russia 7 2.3%
6 Taiwan 6 2%
7 Singapore 4 1.3%
8 Viet Nam 3 1%
9 Mexico 3 1%
10 Bulgaria 2 0.7%
11 Canada 2 0.7%
12 Japan 2 0.7%
13 Korea, Republic of 2 0.7%
14 Turkey 1 0.3%