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 103 46.2%
2 United States 94 42.2%
3 Germany 7 3.1%
4 Netherlands 5 2.2%
5 Russia 5 2.2%
6 Korea, Republic of 3 1.3%
7 Singapore 2 0.9%
8 Brazil 1 0.4%
9 Hong Kong 1 0.4%
10 India 1 0.4%
11 Finland 1 0.4%