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 43 46.2%
2 United States 27 29%
3 Germany 7 7.5%
4 Hong Kong 5 5.4%
5 Taiwan 5 5.4%
6 Korea, Republic of 2 2.2%
7 Poland 1 1.1%
8 Portugal 1 1.1%
9 Russia 1 1.1%
10 Ireland 1 1.1%