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 255 63.9%
2 United States 93 23.3%
3 Germany 33 8.3%
4 Hong Kong 5 1.3%
5 Netherlands 4 1%
6 Austria 2 0.5%
7 South Africa 2 0.5%
8 Canada 2 0.5%
9 Turkey 1 0.3%
10 Brazil 1 0.3%
11 Singapore 1 0.3%