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 19 21.1%
2 Netherlands 15 16.7%
3 Ecuador 14 15.6%
4 United States 14 15.6%
5 Germany 13 14.4%
6 Japan 5 5.6%
7 Korea, Republic of 2 2.2%
8 France 2 2.2%
9 Norway 2 2.2%
10 Spain 2 2.2%
11 Canada 1 1.1%
12 Romania 1 1.1%