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 177 43.6%
2 United States 114 28.1%
3 Germany 32 7.9%
4 Netherlands 23 5.7%
5 Taiwan 18 4.4%
6 Korea, Republic of 16 3.9%
7 Canada 10 2.5%
8 Hong Kong 9 2.2%
9 Japan 2 0.5%
10 United Kingdom 2 0.5%
11 Spain 2 0.5%
12 Russia 1 0.2%