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 29 34.1%
2 China 26 30.6%
3 Germany 10 11.8%
4 Netherlands 7 8.2%
5 Czech Republic 3 3.5%
6 France 2 2.4%
7 Russia 2 2.4%
8 Singapore 2 2.4%
9 Switzerland 2 2.4%
10 New Zealand 1 1.2%
11 India 1 1.2%