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 United States 47 35.1%
2 China 38 28.4%
3 Germany 19 14.2%
4 Taiwan 11 8.2%
5 Netherlands 4 3%
6 France 4 3%
7 United Kingdom 3 2.2%
8 Australia 2 1.5%
9 Russia 2 1.5%
10 Singapore 2 1.5%
11 India 1 0.7%
12 Canada 1 0.7%