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 167 52.7%
2 United States 51 16.1%
3 Germany 39 12.3%
4 Netherlands 9 2.8%
5 Taiwan 9 2.8%
6 Hong Kong 8 2.5%
7 Malaysia 8 2.5%
8 Canada 6 1.9%
9 Singapore 4 1.3%
10 United Kingdom 3 0.9%
11 Australia 3 0.9%
12 Austria 2 0.6%
13 Japan 2 0.6%
14 Macao 2 0.6%
15 Malawi 2 0.6%
16 Ukraine 2 0.6%