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 69 51.5%
2 United States 19 14.2%
3 Netherlands 18 13.4%
4 Russia 7 5.2%
5 Canada 7 5.2%
6 Germany 6 4.5%
7 Singapore 3 2.2%
8 Sweden 1 0.7%
9 Australia 1 0.7%
10 Czech Republic 1 0.7%
11 France 1 0.7%
12 Hong Kong 1 0.7%