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 90 48.4%
2 United States 47 25.3%
3 Netherlands 17 9.1%
4 Germany 7 3.8%
5 Korea, Republic of 7 3.8%
6 France 4 2.2%
7 Brazil 3 1.6%
8 Canada 3 1.6%
9 Iceland 2 1.1%
10 Russia 2 1.1%
11 Ukraine 2 1.1%
12 Taiwan 1 0.5%
13 Japan 1 0.5%