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 147 57.9%
2 United States 46 18.1%
3 Germany 37 14.6%
4 Canada 7 2.8%
5 Ireland 6 2.4%
6 Singapore 3 1.2%
7 Taiwan 2 0.8%
8 Australia 2 0.8%
9 Brazil 1 0.4%
10 1 0.4%
11 Netherlands 1 0.4%
12 Russia 1 0.4%