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 204 61.4%
2 United States 55 16.6%
3 Germany 45 13.6%
4 Hong Kong 8 2.4%
5 Ireland 5 1.5%
6 Canada 3 0.9%
7 Denmark 2 0.6%
8 Netherlands 2 0.6%
9 New Zealand 2 0.6%
10 Russia 2 0.6%
11 Singapore 2 0.6%
12 Spain 1 0.3%
13 Moldova, Republic of 1 0.3%