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 139 54.9%
2 United States 46 18.2%
3 Germany 42 16.6%
4 Hong Kong 7 2.8%
5 Japan 5 2%
6 Canada 5 2%
7 United Kingdom 3 1.2%
8 Ukraine 2 0.8%
9 Finland 2 0.8%
10 Australia 1 0.4%
11 Moldova, Republic of 1 0.4%