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 51 45.9%
2 China 30 27%
3 Korea, Republic of 6 5.4%
4 Canada 6 5.4%
5 Netherlands 5 4.5%
6 Singapore 3 2.7%
7 Czech Republic 3 2.7%
8 Germany 2 1.8%
9 Viet Nam 2 1.8%
10 Malaysia 1 0.9%
11 Switzerland 1 0.9%
12 Taiwan 1 0.9%