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 159 57.4%
2 United States 52 18.8%
3 Germany 35 12.6%
4 Canada 16 5.8%
5 Ireland 5 1.8%
6 Belgium 2 0.7%
7 Singapore 2 0.7%
8 Taiwan 2 0.7%
9 France 1 0.4%
10 Moldova, Republic of 1 0.4%
11 Netherlands 1 0.4%
12 Romania 1 0.4%