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 189 56.9%
2 United States 58 17.5%
3 Germany 40 12%
4 Canada 22 6.6%
5 Korea, Republic of 6 1.8%
6 Netherlands 6 1.8%
7 United Kingdom 4 1.2%
8 Singapore 3 0.9%
9 Poland 2 0.6%
10 Russia 1 0.3%
11 Turkey 1 0.3%