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 265 68.7%
2 United States 44 11.4%
3 Germany 29 7.5%
4 Canada 13 3.4%
5 Taiwan 6 1.6%
6 Hong Kong 6 1.6%
7 Russia 5 1.3%
8 United Kingdom 4 1%
9 India 3 0.8%
10 Denmark 2 0.5%
11 Brazil 2 0.5%
12 Netherlands 2 0.5%
13 Singapore 1 0.3%
14 Spain 1 0.3%
15 Viet Nam 1 0.3%
16 Belgium 1 0.3%
17 Moldova, Republic of 1 0.3%