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 180 46.3%
2 United States 134 34.4%
3 Germany 37 9.5%
4 Hong Kong 14 3.6%
5 Taiwan 7 1.8%
6 Hungary 3 0.8%
7 Japan 2 0.5%
8 Macao 2 0.5%
9 Malaysia 2 0.5%
10 Moldova, Republic of 2 0.5%
11 Singapore 2 0.5%
12 Denmark 2 0.5%
13 Russia 1 0.3%
14 Indonesia 1 0.3%