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 161 52.4%
2 United States 56 18.2%
3 Germany 36 11.7%
4 Netherlands 30 9.8%
5 Canada 13 4.2%
6 Brazil 3 1%
7 Singapore 2 0.7%
8 Taiwan 2 0.7%
9 United Kingdom 2 0.7%
10 France 1 0.3%
11 Hong Kong 1 0.3%