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 20 28.2%
2 Germany 20 28.2%
3 United States 15 21.1%
4 Iran, Islamic Republic of 3 4.2%
5 Hong Kong 2 2.8%
6 France 2 2.8%
7 Turkey 2 2.8%
8 United Kingdom 2 2.8%
9 Australia 1 1.4%
10 Russia 1 1.4%
11 South Africa 1 1.4%
12 Sweden 1 1.4%
13 Trinidad and Tobago 1 1.4%