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 215 74.1%
2 United States 36 12.4%
3 Germany 18 6.2%
4 Malaysia 4 1.4%
5 Taiwan 4 1.4%
6 Netherlands 3 1%
7 Hong Kong 3 1%
8 Singapore 2 0.7%
9 Switzerland 2 0.7%
10 United Kingdom 2 0.7%
11 Czech Republic 1 0.3%