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 40 43%
2 China 26 28%
3 Germany 12 12.9%
4 Hong Kong 4 4.3%
5 Canada 4 4.3%
6 Russia 2 2.2%
7 Singapore 2 2.2%
8 Taiwan 1 1.1%
9 United Kingdom 1 1.1%
10 Portugal 1 1.1%