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 55 55%
2 Netherlands 13 13%
3 United States 9 9%
4 Germany 7 7%
5 Russia 6 6%
6 Canada 3 3%
7 Malaysia 3 3%
8 Singapore 2 2%
9 United Kingdom 1 1%
10 Poland 1 1%