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 53 54.1%
2 Netherlands 11 11.2%
3 Germany 9 9.2%
4 Russia 7 7.1%
5 United States 7 7.1%
6 India 3 3.1%
7 France 3 3.1%
8 Czech Republic 2 2%
9 Australia 1 1%
10 Brazil 1 1%
11 Canada 1 1%