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 144 46.6%
2 United States 91 29.4%
3 Canada 30 9.7%
4 Germany 28 9.1%
5 Netherlands 4 1.3%
6 Taiwan 3 1%
7 France 3 1%
8 Hong Kong 2 0.6%
9 Turkey 2 0.6%
10 Switzerland 2 0.6%