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 270 46%
2 United States 175 29.8%
3 Germany 51 8.7%
4 Netherlands 35 6%
5 Canada 21 3.6%
6 Taiwan 13 2.2%
7 Singapore 10 1.7%
8 Hong Kong 4 0.7%
9 Ireland 2 0.3%
10 Romania 2 0.3%
11 Russia 2 0.3%
12 India 1 0.2%
13 Sweden 1 0.2%