BPG致力于知识的发现和传播
Total Visits of This Article
2019 | 总访问次数
排名 国家/地区 数量 占比
1 1802 81.3%
2 China 218 9.8%
3 United States 136 6.1%
4 Germany 22 1%
5 France 13 0.6%
6 United Kingdom 7 0.3%
7 Canada 5 0.2%
8 Japan 3 0.1%
9 Australia 2 0.1%
10 Belgium 2 0.1%
11 Hong Kong 2 0.1%
12 Italy 1 0%
13 Malaysia 1 0%
14 Thailand 1 0%
15 Ukraine 1 0%