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 69 51.1%
2 United States 22 16.3%
3 Netherlands 11 8.1%
4 Germany 10 7.4%
5 Russia 7 5.2%
6 France 6 4.4%
7 Taiwan 5 3.7%
8 Hong Kong 2 1.5%
9 Czech Republic 2 1.5%
10 India 1 0.7%