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 300 40.5%
2 China 206 27.8%
3 Netherlands 87 11.7%
4 Germany 58 7.8%
5 France 44 5.9%
6 Canada 15 2%
7 Hong Kong 10 1.3%
8 Portugal 6 0.8%
9 4 0.5%
10 Taiwan 3 0.4%
11 Ukraine 3 0.4%
12 United Kingdom 1 0.1%
13 Norway 1 0.1%
14 Japan 1 0.1%
15 Korea, Republic of 1 0.1%
16 Malaysia 1 0.1%