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 212 49%
2 United States 139 32.1%
3 Germany 35 8.1%
4 Canada 20 4.6%
5 Taiwan 10 2.3%
6 Hong Kong 4 0.9%
7 France 3 0.7%
8 Austria 2 0.5%
9 Korea, Republic of 2 0.5%
10 Sweden 2 0.5%
11 Netherlands 2 0.5%
12 Saudi Arabia 1 0.2%
13 Moldova, Republic of 1 0.2%