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 39 45.3%
2 United States 26 30.2%
3 Germany 9 10.5%
4 Canada 4 4.7%
5 France 3 3.5%
6 Australia 1 1.2%
7 Hong Kong 1 1.2%
8 Macao 1 1.2%
9 South Africa 1 1.2%
10 Switzerland 1 1.2%