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 177 58.6%
2 United States 58 19.2%
3 Germany 44 14.6%
4 Japan 6 2%
5 Taiwan 4 1.3%
6 Portugal 3 1%
7 Canada 3 1%
8 Hong Kong 2 0.7%
9 Romania 2 0.7%
10 Latvia 1 0.3%
11 Brazil 1 0.3%
12 United Kingdom 1 0.3%