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 125 49.4%
2 United States 77 30.4%
3 Germany 28 11.1%
4 Russia 7 2.8%
5 Hong Kong 6 2.4%
6 Italy 3 1.2%
7 Australia 2 0.8%
8 Taiwan 2 0.8%
9 Canada 1 0.4%
10 Singapore 1 0.4%
11 Netherlands 1 0.4%