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 170 65.4%
2 United States 38 14.6%
3 Germany 31 11.9%
4 Hong Kong 8 3.1%
5 Canada 4 1.5%
6 Netherlands 2 0.8%
7 Singapore 2 0.8%
8 Sweden 2 0.8%
9 Switzerland 1 0.4%
10 Japan 1 0.4%
11 Malaysia 1 0.4%