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 211 63.4%
2 United States 55 16.5%
3 Germany 31 9.3%
4 Canada 15 4.5%
5 Japan 6 1.8%
6 Russia 3 0.9%
7 Singapore 2 0.6%
8 Spain 2 0.6%
9 Ukraine 2 0.6%
10 Hong Kong 2 0.6%
11 Netherlands 2 0.6%
12 Malaysia 1 0.3%
13 United Kingdom 1 0.3%