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 23 31.5%
2 United States 20 27.4%
3 Netherlands 9 12.3%
4 Russia 5 6.8%
5 Germany 5 6.8%
6 Canada 3 4.1%
7 Singapore 2 2.7%
8 Taiwan 2 2.7%
9 Italy 2 2.7%
10 Australia 1 1.4%
11 Hong Kong 1 1.4%