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 252 56.5%
2 United States 74 16.6%
3 Germany 45 10.1%
4 Taiwan 42 9.4%
5 Hong Kong 18 4%
6 Japan 4 0.9%
7 Singapore 3 0.7%
8 Switzerland 2 0.4%
9 Canada 2 0.4%
10 Malaysia 2 0.4%
11 Azerbaijan 1 0.2%
12 Korea, Republic of 1 0.2%