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 United States 60 40%
2 China 33 22%
3 Netherlands 21 14%
4 Korea, Republic of 8 5.3%
5 Sweden 7 4.7%
6 Singapore 4 2.7%
7 Germany 3 2%
8 Canada 3 2%
9 Viet Nam 3 2%
10 Malaysia 2 1.3%
11 Mexico 2 1.3%
12 Australia 1 0.7%
13 Hong Kong 1 0.7%
14 Ukraine 1 0.7%
15 United Kingdom 1 0.7%