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 45 35.2%
2 China 25 19.5%
3 Netherlands 19 14.8%
4 Germany 18 14.1%
5 Taiwan 6 4.7%
6 France 6 4.7%
7 Hong Kong 3 2.3%
8 Czech Republic 2 1.6%
9 Canada 1 0.8%
10 Norway 1 0.8%
11 Russia 1 0.8%
12 Singapore 1 0.8%