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 31 41.9%
2 United States 10 13.5%
3 Netherlands 8 10.8%
4 Canada 7 9.5%
5 Germany 6 8.1%
6 Korea, Republic of 4 5.4%
7 Malaysia 3 4.1%
8 Hong Kong 2 2.7%
9 Singapore 1 1.4%
10 Sweden 1 1.4%
11 Taiwan 1 1.4%