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 46 52.3%
2 United States 21 23.9%
3 Germany 4 4.5%
4 Japan 4 4.5%
5 Hong Kong 3 3.4%
6 Korea, Republic of 2 2.3%
7 Netherlands 2 2.3%
8 Switzerland 2 2.3%
9 Taiwan 1 1.1%
10 Singapore 1 1.1%
11 Denmark 1 1.1%
12 France 1 1.1%