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 170 59%
2 United States 53 18.4%
3 Germany 37 12.8%
4 Canada 8 2.8%
5 Ireland 5 1.7%
6 Russia 3 1%
7 Singapore 2 0.7%
8 Moldova, Republic of 2 0.7%
9 Bulgaria 2 0.7%
10 Colombia 2 0.7%
11 Finland 2 0.7%
12 France 1 0.3%
13 Australia 1 0.3%