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 256 69.8%
2 United States 45 12.3%
3 Germany 42 11.4%
4 Hong Kong 9 2.5%
5 Singapore 4 1.1%
6 Russia 3 0.8%
7 Netherlands 2 0.5%
8 Czech Republic 2 0.5%
9 Australia 2 0.5%
10 Austria 1 0.3%
11 1 0.3%