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 42 50.6%
2 United States 18 21.7%
3 Germany 8 9.6%
4 Taiwan 4 4.8%
5 Hong Kong 3 3.6%
6 Korea, Republic of 2 2.4%
7 Singapore 2 2.4%
8 Canada 1 1.2%
9 United Kingdom 1 1.2%
10 Portugal 1 1.2%
11 Russia 1 1.2%