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 201 60.5%
2 United States 56 16.9%
3 Germany 50 15.1%
4 Austria 4 1.2%
5 Japan 4 1.2%
6 Canada 3 0.9%
7 Turkey 2 0.6%
8 Ukraine 2 0.6%
9 Russia 2 0.6%
10 Switzerland 2 0.6%
11 Thailand 1 0.3%
12 Singapore 1 0.3%
13 Hong Kong 1 0.3%
14 Malaysia 1 0.3%
15 Malta 1 0.3%
16 New Zealand 1 0.3%