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 34 40.5%
2 United States 16 19%
3 Germany 13 15.5%
4 Korea, Republic of 6 7.1%
5 Netherlands 6 7.1%
6 Australia 3 3.6%
7 Japan 2 2.4%
8 Canada 1 1.2%
9 Spain 1 1.2%
10 United Kingdom 1 1.2%
11 Malaysia 1 1.2%