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 44 60.3%
2 Germany 9 12.3%
3 Netherlands 7 9.6%
4 United States 7 9.6%
5 Macao 2 2.7%
6 Moldova, Republic of 1 1.4%
7 Hong Kong 1 1.4%
8 Singapore 1 1.4%
9 Taiwan 1 1.4%