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 362 71%
2 United States 62 12.2%
3 Germany 36 7.1%
4 Hong Kong 11 2.2%
5 Taiwan 11 2.2%
6 6 1.2%
7 Singapore 5 1%
8 Netherlands 4 0.8%
9 Japan 4 0.8%
10 Canada 3 0.6%
11 Finland 2 0.4%
12 Korea, Republic of 1 0.2%
13 Macao 1 0.2%
14 Poland 1 0.2%
15 United Kingdom 1 0.2%