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 40 60.6%
2 United States 10 15.2%
3 Germany 7 10.6%
4 France 2 3%
5 Netherlands 2 3%
6 Singapore 2 3%
7 Switzerland 1 1.5%
8 Brazil 1 1.5%
9 Korea, Republic of 1 1.5%