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 49 53.3%
2 Germany 13 14.1%
3 Netherlands 13 14.1%
4 United States 9 9.8%
5 Australia 2 2.2%
6 Norway 2 2.2%
7 Russia 2 2.2%
8 Canada 1 1.1%
9 New Zealand 1 1.1%