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 217 48.1%
2 United States 147 32.6%
3 Germany 41 9.1%
4 Sweden 14 3.1%
5 Canada 13 2.9%
6 Netherlands 7 1.6%
7 Singapore 4 0.9%
8 France 4 0.9%
9 United Kingdom 2 0.4%
10 Australia 1 0.2%
11 Czech Republic 1 0.2%