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 United States 56 33.3%
2 China 51 30.4%
3 Netherlands 19 11.3%
4 Germany 9 5.4%
5 Hong Kong 7 4.2%
6 Canada 7 4.2%
7 Taiwan 5 3%
8 Malaysia 4 2.4%
9 Australia 3 1.8%
10 Brazil 2 1.2%
11 Czech Republic 2 1.2%
12 Japan 1 0.6%
13 Thailand 1 0.6%
14 Nigeria 1 0.6%