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 47.4%
2 United States 22 23.2%
3 Netherlands 8 8.4%
4 Germany 7 7.4%
5 Malaysia 5 5.3%
6 Canada 2 2.1%
7 Japan 2 2.1%
8 Switzerland 2 2.1%
9 France 1 1.1%
10 New Zealand 1 1.1%