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 52 46.4%
2 Netherlands 21 18.8%
3 United States 18 16.1%
4 France 8 7.1%
5 Germany 8 7.1%
6 Russia 2 1.8%
7 Singapore 1 0.9%
8 Hong Kong 1 0.9%
9 Czech Republic 1 0.9%