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 68 49.3%
2 United States 37 26.8%
3 Germany 13 9.4%
4 Canada 5 3.6%
5 Hong Kong 4 2.9%
6 Taiwan 3 2.2%
7 Ukraine 2 1.4%
8 United Kingdom 2 1.4%
9 Czech Republic 2 1.4%
10 France 1 0.7%
11 Portugal 1 0.7%