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 212 52.5%
2 United States 121 30%
3 Germany 29 7.2%
4 Taiwan 23 5.7%
5 Russia 5 1.2%
6 Singapore 5 1.2%
7 Japan 2 0.5%
8 Netherlands 2 0.5%
9 Australia 2 0.5%
10 Canada 1 0.2%
11 Hong Kong 1 0.2%
12 Poland 1 0.2%