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 319 48%
2 United States 135 20.3%
3 Netherlands 107 16.1%
4 Germany 56 8.4%
5 Canada 14 2.1%
6 France 6 0.9%
7 Russia 5 0.8%
8 Singapore 5 0.8%
9 Taiwan 4 0.6%
10 Ireland 4 0.6%
11 Korea, Republic of 2 0.3%
12 India 2 0.3%
13 Spain 2 0.3%
14 Nigeria 2 0.3%
15 Brazil 1 0.2%