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 28 32.2%
2 Germany 20 23%
3 United States 20 23%
4 Canada 7 8%
5 Hong Kong 6 6.9%
6 Russia 2 2.3%
7 United Kingdom 1 1.1%
8 France 1 1.1%
9 Netherlands 1 1.1%
10 Portugal 1 1.1%