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 652 79.5%
2 United States 73 8.9%
3 Germany 43 5.2%
4 Taiwan 23 2.8%
5 Canada 14 1.7%
6 Hong Kong 6 0.7%
7 Korea, Republic of 2 0.2%
8 United Kingdom 2 0.2%
9 Singapore 2 0.2%
10 Macao 1 0.1%
11 Australia 1 0.1%
12 Japan 1 0.1%