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 178 67.2%
2 United States 39 14.7%
3 Netherlands 18 6.8%
4 Korea, Republic of 10 3.8%
5 Canada 6 2.3%
6 Hong Kong 4 1.5%
7 Ukraine 3 1.1%
8 Japan 2 0.8%
9 Russia 2 0.8%
10 Serbia 1 0.4%
11 France 1 0.4%
12 Germany 1 0.4%