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 215 65.3%
2 United States 39 11.9%
3 Germany 36 10.9%
4 Canada 19 5.8%
5 Ireland 5 1.5%
6 Moldova, Republic of 2 0.6%
7 Netherlands 2 0.6%
8 Russia 2 0.6%
9 Singapore 2 0.6%
10 United Arab Emirates 2 0.6%
11 Czech Republic 2 0.6%
12 Viet Nam 2 0.6%
13 Brazil 1 0.3%