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 27 30%
2 Netherlands 23 25.6%
3 United States 21 23.3%
4 Germany 4 4.4%
5 Canada 4 4.4%
6 France 3 3.3%
7 Australia 2 2.2%
8 Czech Republic 2 2.2%
9 Ghana 2 2.2%
10 Singapore 1 1.1%
11 Taiwan 1 1.1%