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 140 62.2%
2 United States 34 15.1%
3 Germany 14 6.2%
4 Korea, Republic of 13 5.8%
5 Hong Kong 11 4.9%
6 Taiwan 4 1.8%
7 Canada 4 1.8%
8 Singapore 3 1.3%
9 Portugal 1 0.4%
10 Russia 1 0.4%