BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 53 44.9%
2 United States 23 19.5%
3 Germany 12 10.2%
4 Netherlands 6 5.1%
5 Czech Republic 5 4.2%
6 United Kingdom 5 4.2%
7 Korea, Republic of 4 3.4%
8 Canada 3 2.5%
9 France 3 2.5%
10 India 2 1.7%
11 Romania 2 1.7%