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 141 69.1%
2 United States 23 11.3%
3 Netherlands 10 4.9%
4 France 8 3.9%
5 Germany 7 3.4%
6 Taiwan 7 3.4%
7 Russia 4 2%
8 Hong Kong 2 1%
9 Czech Republic 1 0.5%
10 United Arab Emirates 1 0.5%