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 69 38.1%
2 China 57 31.5%
3 Germany 22 12.2%
4 Netherlands 15 8.3%
5 Hong Kong 7 3.9%
6 Canada 4 2.2%
7 Taiwan 3 1.7%
8 Portugal 1 0.6%
9 Russia 1 0.6%
10 Ireland 1 0.6%
11 France 1 0.6%