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 32 42.7%
2 United States 26 34.7%
3 Germany 5 6.7%
4 Hong Kong 4 5.3%
5 United Kingdom 3 4%
6 Canada 1 1.3%
7 France 1 1.3%
8 Netherlands 1 1.3%
9 North Macedonia 1 1.3%
10 Portugal 1 1.3%