BPG致力于知识的发现和传播
Total Visits of This Article
2019 | 总访问次数
排名 国家/地区 数量 占比
1 314 61.6%
2 United States 96 18.8%
3 China 49 9.6%
4 Germany 19 3.7%
5 France 13 2.5%
6 Czech Republic 4 0.8%
7 Canada 3 0.6%
8 Norway 3 0.6%
9 Philippines 2 0.4%
10 United Kingdom 2 0.4%
11 India 2 0.4%
12 Iran, Islamic Republic of 1 0.2%
13 Hong Kong 1 0.2%
14 Ukraine 1 0.2%