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 158 42.8%
2 United States 126 34.1%
3 Germany 35 9.5%
4 Netherlands 28 7.6%
5 Singapore 6 1.6%
6 Canada 5 1.4%
7 Korea, Republic of 4 1.1%
8 United Kingdom 2 0.5%
9 Brazil 2 0.5%
10 Russia 1 0.3%
11 India 1 0.3%
12 Japan 1 0.3%