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 44 44.9%
2 United States 22 22.4%
3 Germany 8 8.2%
4 Japan 7 7.1%
5 Hong Kong 5 5.1%
6 Senegal 5 5.1%
7 Korea, Republic of 3 3.1%
8 New Zealand 2 2%
9 Spain 1 1%
10 Malaysia 1 1%