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 179 60.7%
2 Germany 48 16.3%
3 United States 44 14.9%
4 Hong Kong 8 2.7%
5 Canada 5 1.7%
6 Japan 2 0.7%
7 Netherlands 2 0.7%
8 Slovakia 2 0.7%
9 Taiwan 2 0.7%
10 United Kingdom 1 0.3%
11 Belgium 1 0.3%
12 France 1 0.3%