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 154 61.6%
2 United States 45 18%
3 Germany 31 12.4%
4 India 4 1.6%
5 Canada 4 1.6%
6 Brazil 3 1.2%
7 Russia 3 1.2%
8 Ukraine 2 0.8%
9 United Kingdom 1 0.4%
10 Australia 1 0.4%
11 Mexico 1 0.4%
12 Romania 1 0.4%