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 163 52.2%
2 United States 68 21.8%
3 Germany 27 8.7%
4 Canada 18 5.8%
5 Netherlands 9 2.9%
6 Japan 8 2.6%
7 France 4 1.3%
8 Australia 3 1%
9 Russia 3 1%
10 Malaysia 2 0.6%
11 Taiwan 2 0.6%
12 Mexico 1 0.3%
13 Singapore 1 0.3%
14 Luxembourg 1 0.3%
15 Hong Kong 1 0.3%
16 Ireland 1 0.3%