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 60 71.4%
2 Germany 8 9.5%
3 United States 5 6%
4 Hong Kong 3 3.6%
5 Australia 2 2.4%
6 Singapore 2 2.4%
7 Switzerland 1 1.2%
8 Taiwan 1 1.2%
9 Israel 1 1.2%
10 Moldova, Republic of 1 1.2%