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 53 55.2%
2 Germany 13 13.5%
3 Netherlands 9 9.4%
4 United States 8 8.3%
5 Canada 4 4.2%
6 Hong Kong 3 3.1%
7 New Zealand 3 3.1%
8 Norway 2 2.1%
9 Brazil 1 1%