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 51 47.7%
2 United States 19 17.8%
3 Netherlands 17 15.9%
4 Germany 7 6.5%
5 Hong Kong 3 2.8%
6 Taiwan 3 2.8%
7 Japan 2 1.9%
8 France 1 0.9%
9 United Kingdom 1 0.9%
10 Poland 1 0.9%
11 Portugal 1 0.9%
12 Canada 1 0.9%