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 41 37.6%
2 United States 24 22%
3 Netherlands 16 14.7%
4 Germany 7 6.4%
5 Taiwan 6 5.5%
6 France 5 4.6%
7 Singapore 4 3.7%
8 Hong Kong 2 1.8%
9 Czech Republic 2 1.8%
10 India 1 0.9%
11 Russia 1 0.9%