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 171 57.8%
2 United States 56 18.9%
3 Germany 30 10.1%
4 Canada 24 8.1%
5 Taiwan 4 1.4%
6 Poland 2 0.7%
7 Mexico 2 0.7%
8 Hong Kong 2 0.7%
9 India 2 0.7%
10 Ireland 1 0.3%
11 Norway 1 0.3%
12 Australia 1 0.3%