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 190 74.5%
2 United States 22 8.6%
3 Germany 19 7.5%
4 Singapore 11 4.3%
5 Korea, Republic of 3 1.2%
6 2 0.8%
7 Netherlands 2 0.8%
8 Hong Kong 2 0.8%
9 Ireland 2 0.8%
10 Moldova, Republic of 1 0.4%
11 Taiwan 1 0.4%