BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 36 36%
2 Germany 15 15%
3 Netherlands 15 15%
4 United States 14 14%
5 India 5 5%
6 France 5 5%
7 Taiwan 4 4%
8 Singapore 2 2%
9 Canada 1 1%
10 Poland 1 1%
11 Russia 1 1%
12 United Kingdom 1 1%