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 198 54.1%
2 United States 110 30.1%
3 Germany 26 7.1%
4 Canada 16 4.4%
5 Italy 3 0.8%
6 Singapore 3 0.8%
7 Russia 2 0.5%
8 Bulgaria 2 0.5%
9 Hong Kong 2 0.5%
10 Indonesia 1 0.3%
11 Japan 1 0.3%
12 Macao 1 0.3%
13 Thailand 1 0.3%