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 229 68.2%
2 United States 42 12.5%
3 Germany 26 7.7%
4 Hong Kong 8 2.4%
5 Singapore 5 1.5%
6 Sweden 3 0.9%
7 Malaysia 3 0.9%
8 New Zealand 2 0.6%
9 Bangladesh 2 0.6%
10 Korea, Republic of 2 0.6%
11 Switzerland 2 0.6%
12 Spain 2 0.6%
13 Iran, Islamic Republic of 2 0.6%
14 2 0.6%
15 Australia 2 0.6%
16 Austria 1 0.3%
17 Czech Republic 1 0.3%
18 Estonia 1 0.3%
19 Japan 1 0.3%