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 57 58.8%
2 Germany 14 14.4%
3 Netherlands 8 8.2%
4 United States 6 6.2%
5 India 3 3.1%
6 Australia 3 3.1%
7 South Africa 2 2.1%
8 Switzerland 2 2.1%
9 Canada 1 1%
10 Egypt 1 1%