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 57 56.4%
2 United States 15 14.9%
3 Netherlands 10 9.9%
4 Germany 9 8.9%
5 France 3 3%
6 Hong Kong 2 2%
7 Canada 2 2%
8 Italy 1 1%
9 Korea, Republic of 1 1%
10 Poland 1 1%