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 161 68.5%
2 United States 34 14.5%
3 Germany 20 8.5%
4 Russia 4 1.7%
5 Taiwan 3 1.3%
6 Korea, Republic of 3 1.3%
7 Hong Kong 2 0.9%
8 France 2 0.9%
9 Brazil 2 0.9%
10 Ukraine 2 0.9%
11 Netherlands 1 0.4%
12 Turkey 1 0.4%