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 China 87 57.2%
2 United States 21 13.8%
3 Germany 15 9.9%
4 Netherlands 11 7.2%
5 Canada 5 3.3%
6 Hong Kong 3 2%
7 United Kingdom 3 2%
8 Taiwan 2 1.3%
9 France 2 1.3%
10 Australia 1 0.7%
11 Portugal 1 0.7%
12 Singapore 1 0.7%