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 United States 221 41.9%
2 China 146 27.7%
3 Netherlands 61 11.6%
4 Germany 36 6.8%
5 France 21 4%
6 Hong Kong 16 3%
7 Portugal 8 1.5%
8 4 0.8%
9 Canada 4 0.8%
10 Iran, Islamic Republic of 3 0.6%
11 Ukraine 3 0.6%
12 Norway 3 0.6%
13 United Kingdom 1 0.2%
14 Korea, Republic of 1 0.2%