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 77 41.8%
2 United States 44 23.9%
3 Germany 17 9.2%
4 Netherlands 15 8.2%
5 Taiwan 7 3.8%
6 France 7 3.8%
7 Canada 4 2.2%
8 Malaysia 3 1.6%
9 Hong Kong 3 1.6%
10 Italy 2 1.1%
11 Brazil 2 1.1%
12 Australia 1 0.5%
13 Norway 1 0.5%
14 Portugal 1 0.5%