BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 126 54.5%
2 United States 64 27.7%
3 Germany 10 4.3%
4 Hong Kong 8 3.5%
5 Netherlands 7 3%
6 Canada 6 2.6%
7 Taiwan 3 1.3%
8 Japan 2 0.9%
9 Portugal 1 0.4%
10 Russia 1 0.4%
11 Singapore 1 0.4%
12 Switzerland 1 0.4%
13 Viet Nam 1 0.4%