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 591 77.1%
2 United States 72 9.4%
3 Germany 36 4.7%
4 Canada 35 4.6%
5 Korea, Republic of 8 1%
6 Netherlands 4 0.5%
7 Taiwan 4 0.5%
8 Italy 3 0.4%
9 India 3 0.4%
10 Ireland 2 0.3%
11 Australia 2 0.3%
12 Czech Republic 2 0.3%
13 United Kingdom 2 0.3%
14 Malaysia 2 0.3%
15 Hong Kong 1 0.1%