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 188 52.8%
2 United States 63 17.7%
3 Germany 33 9.3%
4 Canada 27 7.6%
5 Netherlands 20 5.6%
6 Taiwan 9 2.5%
7 Japan 5 1.4%
8 Hong Kong 2 0.6%
9 Norway 2 0.6%
10 Singapore 2 0.6%
11 Sweden 2 0.6%
12 United Kingdom 1 0.3%
13 Spain 1 0.3%
14 North Macedonia 1 0.3%