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 36 38.7%
2 United States 18 19.4%
3 Netherlands 10 10.8%
4 Germany 8 8.6%
5 Canada 7 7.5%
6 Korea, Republic of 6 6.5%
7 Sweden 3 3.2%
8 Hong Kong 3 3.2%
9 Australia 1 1.1%
10 Malaysia 1 1.1%