BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 44 41.1%
2 United States 21 19.6%
3 Germany 18 16.8%
4 Netherlands 9 8.4%
5 France 5 4.7%
6 Hong Kong 3 2.8%
7 Afghanistan 2 1.9%
8 Canada 2 1.9%
9 Czech Republic 1 0.9%
10 Japan 1 0.9%
11 Taiwan 1 0.9%