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 242 34.5%
2 China 226 32.2%
3 Germany 79 11.3%
4 Netherlands 58 8.3%
5 Sweden 38 5.4%
6 Korea, Republic of 23 3.3%
7 Canada 11 1.6%
8 Cote D'ivoire 6 0.9%
9 Russia 5 0.7%
10 Malaysia 3 0.4%
11 Australia 3 0.4%
12 Colombia 2 0.3%
13 India 2 0.3%
14 Singapore 2 0.3%
15 Taiwan 1 0.1%
16 Czech Republic 1 0.1%