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 168 42%
2 United States 134 33.5%
3 Germany 56 14%
4 Russia 11 2.8%
5 Canada 8 2%
6 Australia 5 1.2%
7 Malaysia 5 1.2%
8 Netherlands 3 0.8%
9 Ireland 3 0.8%
10 Korea, Republic of 2 0.5%
11 Hong Kong 2 0.5%
12 Turkey 2 0.5%
13 Taiwan 1 0.2%