BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 311 48.1%
2 United States 125 19.3%
3 Netherlands 98 15.1%
4 Germany 63 9.7%
5 Canada 17 2.6%
6 France 6 0.9%
7 Brazil 4 0.6%
8 Portugal 4 0.6%
9 Ukraine 4 0.6%
10 Norway 3 0.5%
11 Indonesia 3 0.5%
12 3 0.5%
13 Singapore 2 0.3%
14 United Kingdom 1 0.2%
15 Korea, Republic of 1 0.2%
16 Austria 1 0.2%
17 India 1 0.2%