BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 182 45.3%
2 United States 153 38.1%
3 Germany 43 10.7%
4 Netherlands 8 2%
5 Korea, Republic of 5 1.2%
6 Canada 3 0.7%
7 Australia 2 0.5%
8 Sweden 2 0.5%
9 Hong Kong 2 0.5%
10 India 1 0.2%
11 France 1 0.2%