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 37 37.8%
2 China 26 26.5%
3 Netherlands 18 18.4%
4 Germany 3 3.1%
5 India 2 2%
6 Japan 2 2%
7 Brazil 2 2%
8 France 2 2%
9 Russia 2 2%
10 Singapore 2 2%
11 Czech Republic 1 1%
12 Hong Kong 1 1%