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 84 56.4%
2 United States 21 14.1%
3 Netherlands 16 10.7%
4 Germany 8 5.4%
5 Japan 6 4%
6 Spain 3 2%
7 Turkey 3 2%
8 United Kingdom 3 2%
9 Russia 2 1.3%
10 India 2 1.3%
11 France 1 0.7%