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 45 48.4%
2 United States 18 19.4%
3 Germany 12 12.9%
4 France 7 7.5%
5 Netherlands 4 4.3%
6 Canada 2 2.2%
7 Japan 2 2.2%
8 Australia 1 1.1%
9 Taiwan 1 1.1%
10 Hong Kong 1 1.1%