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 197 52.3%
2 United States 62 16.4%
3 Germany 36 9.5%
4 Netherlands 31 8.2%
5 Canada 31 8.2%
6 Hong Kong 6 1.6%
7 Taiwan 5 1.3%
8 Japan 2 0.5%
9 Switzerland 2 0.5%
10 France 2 0.5%
11 Belgium 2 0.5%
12 Brazil 1 0.3%