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 40 57.1%
2 United States 10 14.3%
3 Netherlands 9 12.9%
4 Germany 4 5.7%
5 Macao 2 2.9%
6 Canada 2 2.9%
7 Australia 1 1.4%
8 France 1 1.4%
9 Korea, Republic of 1 1.4%