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 49 47.1%
2 United States 33 31.7%
3 Germany 8 7.7%
4 Hong Kong 5 4.8%
5 Taiwan 3 2.9%
6 Korea, Republic of 2 1.9%
7 Poland 1 1%
8 Portugal 1 1%
9 United Kingdom 1 1%
10 Australia 1 1%