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 205 63.5%
2 United States 54 16.7%
3 Germany 36 11.1%
4 Canada 13 4%
5 France 4 1.2%
6 Hong Kong 2 0.6%
7 Netherlands 2 0.6%
8 Singapore 2 0.6%
9 Switzerland 2 0.6%
10 Russia 1 0.3%
11 India 1 0.3%
12 1 0.3%