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 76 53.9%
2 United States 39 27.7%
3 Germany 13 9.2%
4 Hong Kong 4 2.8%
5 Korea, Republic of 2 1.4%
6 Taiwan 2 1.4%
7 United Kingdom 1 0.7%
8 Czech Republic 1 0.7%
9 France 1 0.7%
10 Portugal 1 0.7%
11 Canada 1 0.7%