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 159 61.4%
2 United States 37 14.3%
3 Germany 24 9.3%
4 Netherlands 9 3.5%
5 Hong Kong 8 3.1%
6 Taiwan 8 3.1%
7 Canada 3 1.2%
8 Singapore 3 1.2%
9 Norway 2 0.8%
10 Russia 2 0.8%
11 Togo 2 0.8%
12 Japan 1 0.4%
13 Malaysia 1 0.4%