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 450 54.6%
2 Netherlands 145 17.6%
3 United States 123 14.9%
4 Germany 70 8.5%
5 Canada 20 2.4%
6 Russia 4 0.5%
7 France 4 0.5%
8 Singapore 2 0.2%
9 United Kingdom 2 0.2%
10 Australia 2 0.2%
11 Brazil 1 0.1%
12 1 0.1%