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 77 52%
2 United States 28 18.9%
3 Netherlands 20 13.5%
4 Korea, Republic of 6 4.1%
5 Taiwan 4 2.7%
6 Italy 3 2%
7 Germany 2 1.4%
8 Saudi Arabia 2 1.4%
9 Singapore 2 1.4%
10 Malaysia 1 0.7%
11 Hong Kong 1 0.7%
12 Japan 1 0.7%
13 Australia 1 0.7%