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 169 46.2%
2 United States 123 33.6%
3 Germany 40 10.9%
4 Hong Kong 15 4.1%
5 Netherlands 4 1.1%
6 Canada 4 1.1%
7 United Kingdom 3 0.8%
8 Brazil 2 0.5%
9 India 2 0.5%
10 Japan 1 0.3%
11 Macao 1 0.3%
12 Australia 1 0.3%
13 Taiwan 1 0.3%