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 34 35.8%
2 United States 24 25.3%
3 Netherlands 19 20%
4 Germany 6 6.3%
5 Canada 5 5.3%
6 Singapore 2 2.1%
7 Korea, Republic of 2 2.1%
8 Czech Republic 2 2.1%
9 France 1 1.1%