BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 90 64.7%
2 United States 20 14.4%
3 France 10 7.2%
4 Germany 10 7.2%
5 Hong Kong 2 1.4%
6 India 2 1.4%
7 Russia 2 1.4%
8 Czech Republic 2 1.4%
9 Netherlands 1 0.7%