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 United States 99 45.6%
2 China 58 26.7%
3 Germany 19 8.8%
4 Netherlands 17 7.8%
5 Canada 9 4.1%
6 Taiwan 5 2.3%
7 France 3 1.4%
8 United Kingdom 2 0.9%
9 Norway 1 0.5%
10 Poland 1 0.5%
11 Hong Kong 1 0.5%
12 India 1 0.5%
13 Mauritius 1 0.5%