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 United States 88 36.8%
2 China 76 31.8%
3 Russia 34 14.2%
4 Canada 11 4.6%
5 Netherlands 9 3.8%
6 Germany 8 3.3%
7 Malaysia 4 1.7%
8 United Kingdom 3 1.3%
9 Spain 2 0.8%
10 Japan 2 0.8%
11 France 1 0.4%
12 Mauritius 1 0.4%