BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 United States 43 31.4%
2 China 42 30.7%
3 Germany 23 16.8%
4 Netherlands 13 9.5%
5 Hong Kong 5 3.6%
6 Taiwan 4 2.9%
7 United Kingdom 3 2.2%
8 Portugal 1 0.7%
9 France 1 0.7%
10 Australia 1 0.7%
11 Canada 1 0.7%