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 194 72.7%
2 United States 38 14.2%
3 Germany 14 5.2%
4 Russia 7 2.6%
5 Singapore 2 0.7%
6 Taiwan 2 0.7%
7 Hong Kong 2 0.7%
8 India 2 0.7%
9 Italy 2 0.7%
10 Moldova, Republic of 1 0.4%
11 1 0.4%
12 Brazil 1 0.4%
13 Viet Nam 1 0.4%