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 40 36.7%
2 United States 26 23.9%
3 Netherlands 19 17.4%
4 Taiwan 7 6.4%
5 Germany 7 6.4%
6 4 3.7%
7 Hong Kong 3 2.8%
8 Canada 1 0.9%
9 Poland 1 0.9%
10 Portugal 1 0.9%