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 69 40.6%
2 United States 55 32.4%
3 Germany 18 10.6%
4 Netherlands 17 10%
5 Hong Kong 2 1.2%
6 France 2 1.2%
7 Canada 2 1.2%
8 Taiwan 2 1.2%
9 United Kingdom 1 0.6%
10 1 0.6%
11 Portugal 1 0.6%