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 136 57.6%
2 United States 35 14.8%
3 Germany 28 11.9%
4 Ireland 9 3.8%
5 Korea, Republic of 8 3.4%
6 Canada 5 2.1%
7 Malaysia 3 1.3%
8 Russia 3 1.3%
9 Singapore 2 0.8%
10 Slovakia 2 0.8%
11 Japan 2 0.8%
12 United Kingdom 2 0.8%
13 Ukraine 1 0.4%