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 United States 41 31.3%
2 China 36 27.5%
3 Netherlands 22 16.8%
4 Germany 16 12.2%
5 Taiwan 6 4.6%
6 Hong Kong 3 2.3%
7 Canada 2 1.5%
8 Belgium 1 0.8%
9 France 1 0.8%
10 Portugal 1 0.8%
11 Russia 1 0.8%
12 Viet Nam 1 0.8%