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 221 59.4%
2 United States 68 18.3%
3 Germany 39 10.5%
4 Taiwan 18 4.8%
5 Netherlands 7 1.9%
6 Hong Kong 6 1.6%
7 Czech Republic 2 0.5%
8 Singapore 2 0.5%
9 Switzerland 2 0.5%
10 India 2 0.5%
11 Japan 2 0.5%
12 Brazil 2 0.5%
13 Hungary 1 0.3%