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 239 60.5%
2 United States 76 19.2%
3 Germany 34 8.6%
4 Hong Kong 11 2.8%
5 Netherlands 9 2.3%
6 Italy 7 1.8%
7 Korea, Republic of 6 1.5%
8 Singapore 3 0.8%
9 Japan 3 0.8%
10 2 0.5%
11 Russia 2 0.5%
12 Australia 1 0.3%
13 Canada 1 0.3%
14 New Zealand 1 0.3%