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 175 64.3%
2 United States 44 16.2%
3 Germany 38 14%
4 Hong Kong 3 1.1%
5 Japan 2 0.7%
6 Netherlands 2 0.7%
7 Russia 2 0.7%
8 Belgium 2 0.7%
9 France 2 0.7%
10 Switzerland 1 0.4%
11 Taiwan 1 0.4%