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 163 61.3%
2 United States 50 18.8%
3 Germany 40 15%
4 Netherlands 3 1.1%
5 Taiwan 2 0.8%
6 France 2 0.8%
7 Australia 2 0.8%
8 India 1 0.4%
9 Japan 1 0.4%
10 United Kingdom 1 0.4%
11 Singapore 1 0.4%