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 208 62.5%
2 United States 51 15.3%
3 Germany 20 6%
4 Hong Kong 14 4.2%
5 Netherlands 11 3.3%
6 Portugal 6 1.8%
7 5 1.5%
8 Taiwan 4 1.2%
9 Canada 3 0.9%
10 Russia 3 0.9%
11 Azerbaijan 2 0.6%
12 France 2 0.6%
13 Sweden 1 0.3%
14 Viet Nam 1 0.3%
15 Trinidad and Tobago 1 0.3%
16 Iran, Islamic Republic of 1 0.3%