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 183 62.2%
2 United States 49 16.7%
3 Germany 27 9.2%
4 Canada 10 3.4%
5 Russia 7 2.4%
6 Singapore 5 1.7%
7 Netherlands 4 1.4%
8 Japan 2 0.7%
9 2 0.7%
10 Austria 2 0.7%
11 Brazil 1 0.3%
12 France 1 0.3%
13 Italy 1 0.3%