BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 274 75.9%
2 United States 39 10.8%
3 Germany 15 4.2%
4 Netherlands 9 2.5%
5 Hong Kong 8 2.2%
6 Canada 3 0.8%
7 Taiwan 2 0.6%
8 Japan 2 0.6%
9 Macao 2 0.6%
10 2 0.6%
11 Australia 1 0.3%
12 Norway 1 0.3%
13 Portugal 1 0.3%
14 Malaysia 1 0.3%
15 United Kingdom 1 0.3%