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 137 57.3%
2 United States 48 20.1%
3 Germany 35 14.6%
4 Bolivia, Plurinational State of 5 2.1%
5 France 4 1.7%
6 2 0.8%
7 Singapore 2 0.8%
8 Viet Nam 2 0.8%
9 United Kingdom 2 0.8%
10 Taiwan 1 0.4%
11 Netherlands 1 0.4%