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 183 50.1%
2 United States 104 28.5%
3 Germany 39 10.7%
4 Korea, Republic of 14 3.8%
5 Russia 5 1.4%
6 Austria 4 1.1%
7 Canada 4 1.1%
8 Singapore 3 0.8%
9 India 3 0.8%
10 Australia 2 0.5%
11 Switzerland 2 0.5%
12 Ukraine 1 0.3%
13 Hong Kong 1 0.3%