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 23 31.9%
2 Germany 15 20.8%
3 China 8 11.1%
4 France 6 8.3%
5 Netherlands 6 8.3%
6 Norway 4 5.6%
7 Singapore 2 2.8%
8 Canada 2 2.8%
9 Korea, Republic of 2 2.8%
10 Malaysia 2 2.8%
11 Czech Republic 1 1.4%
12 Taiwan 1 1.4%