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 48 29.8%
2 Germany 32 19.9%
3 China 31 19.3%
4 Netherlands 22 13.7%
5 Canada 9 5.6%
6 Russia 5 3.1%
7 Hong Kong 4 2.5%
8 Malaysia 3 1.9%
9 India 2 1.2%
10 Singapore 2 1.2%
11 France 2 1.2%
12 Czech Republic 1 0.6%