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 29 39.7%
2 China 9 12.3%
3 Korea, Republic of 7 9.6%
4 Canada 6 8.2%
5 France 5 6.8%
6 Germany 5 6.8%
7 Malaysia 4 5.5%
8 Netherlands 4 5.5%
9 Norway 1 1.4%
10 United Kingdom 1 1.4%
11 Japan 1 1.4%
12 Czech Republic 1 1.4%