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 57 40.1%
2 United States 40 28.2%
3 Germany 19 13.4%
4 Netherlands 10 7%
5 Hong Kong 7 4.9%
6 Canada 3 2.1%
7 Taiwan 3 2.1%
8 New Zealand 2 1.4%
9 Portugal 1 0.7%