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 157 42.7%
2 United States 139 37.8%
3 Germany 36 9.8%
4 Canada 11 3%
5 Taiwan 7 1.9%
6 Hong Kong 6 1.6%
7 Switzerland 4 1.1%
8 France 2 0.5%
9 Netherlands 2 0.5%
10 Romania 2 0.5%
11 Ireland 1 0.3%
12 Moldova, Republic of 1 0.3%