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 47 42.7%
2 United States 26 23.6%
3 Germany 6 5.5%
4 Canada 6 5.5%
5 Korea, Republic of 6 5.5%
6 Singapore 3 2.7%
7 Malaysia 2 1.8%
8 Netherlands 2 1.8%
9 Philippines 2 1.8%
10 Senegal 2 1.8%
11 Australia 2 1.8%
12 Latvia 1 0.9%
13 Greece 1 0.9%
14 Hong Kong 1 0.9%
15 Japan 1 0.9%
16 New Zealand 1 0.9%
17 Taiwan 1 0.9%