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 72 35.5%
2 China 54 26.6%
3 Netherlands 26 12.8%
4 Germany 17 8.4%
5 Hong Kong 14 6.9%
6 Canada 6 3%
7 United Kingdom 3 1.5%
8 Singapore 2 1%
9 Japan 2 1%
10 Australia 2 1%
11 Brazil 2 1%
12 Czech Republic 1 0.5%
13 Korea, Republic of 1 0.5%
14 Ukraine 1 0.5%