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 China 38 33.3%
2 United States 29 25.4%
3 Netherlands 19 16.7%
4 Korea, Republic of 9 7.9%
5 Germany 6 5.3%
6 Czech Republic 4 3.5%
7 Canada 4 3.5%
8 Belgium 2 1.8%
9 Singapore 2 1.8%
10 France 1 0.9%