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 141 49%
2 United States 59 20.5%
3 Germany 40 13.9%
4 Korea, Republic of 21 7.3%
5 Russia 6 2.1%
6 Canada 4 1.4%
7 Denmark 2 0.7%
8 Malaysia 2 0.7%
9 New Zealand 2 0.7%
10 Hong Kong 2 0.7%
11 Japan 2 0.7%
12 Singapore 2 0.7%
13 Australia 2 0.7%
14 Turkey 1 0.3%
15 Finland 1 0.3%
16 Chile 1 0.3%