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 49 33.6%
2 China 45 30.8%
3 Netherlands 13 8.9%
4 Germany 12 8.2%
5 Hong Kong 7 4.8%
6 Mongolia 6 4.1%
7 Canada 4 2.7%
8 Japan 3 2.1%
9 United Kingdom 2 1.4%
10 Portugal 1 0.7%
11 Singapore 1 0.7%
12 Korea, Republic of 1 0.7%
13 Israel 1 0.7%
14 Czech Republic 1 0.7%