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 40 52.6%
2 Germany 11 14.5%
3 Netherlands 8 10.5%
4 United States 6 7.9%
5 Chile 2 2.6%
6 Switzerland 2 2.6%
7 India 2 2.6%
8 Japan 2 2.6%
9 Taiwan 1 1.3%
10 Australia 1 1.3%
11 Canada 1 1.3%