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 51 47.2%
2 United States 17 15.7%
3 Netherlands 11 10.2%
4 France 10 9.3%
5 Germany 8 7.4%
6 Hong Kong 3 2.8%
7 India 2 1.9%
8 Russia 2 1.9%
9 Singapore 1 0.9%
10 Taiwan 1 0.9%
11 Czech Republic 1 0.9%
12 Denmark 1 0.9%