BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 33 39.8%
2 United States 23 27.7%
3 Germany 10 12%
4 Netherlands 7 8.4%
5 Taiwan 3 3.6%
6 Hong Kong 2 2.4%
7 Norway 1 1.2%
8 France 1 1.2%
9 Brazil 1 1.2%
10 Canada 1 1.2%
11 United Kingdom 1 1.2%