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 219 52.8%
2 United States 126 30.4%
3 Germany 38 9.2%
4 Canada 11 2.7%
5 Taiwan 4 1%
6 United Kingdom 2 0.5%
7 Singapore 2 0.5%
8 Japan 2 0.5%
9 Korea, Republic of 2 0.5%
10 Netherlands 2 0.5%
11 New Zealand 2 0.5%
12 Russia 1 0.2%
13 Malaysia 1 0.2%
14 Australia 1 0.2%
15 Ireland 1 0.2%
16 Switzerland 1 0.2%