BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 United States 31 30.4%
2 China 23 22.5%
3 Netherlands 21 20.6%
4 Germany 9 8.8%
5 Hong Kong 6 5.9%
6 Taiwan 4 3.9%
7 United Kingdom 2 2%
8 Australia 1 1%
9 Japan 1 1%
10 France 1 1%
11 Russia 1 1%
12 Singapore 1 1%
13 Spain 1 1%