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 53 36.6%
2 China 48 33.1%
3 Germany 18 12.4%
4 Netherlands 10 6.9%
5 Taiwan 5 3.4%
6 Singapore 3 2.1%
7 Hong Kong 3 2.1%
8 Canada 2 1.4%
9 Portugal 1 0.7%
10 India 1 0.7%
11 France 1 0.7%