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 162 68.6%
2 United States 42 17.8%
3 Germany 15 6.4%
4 Netherlands 5 2.1%
5 Singapore 5 2.1%
6 Taiwan 3 1.3%
7 Canada 1 0.4%
8 Fiji 1 0.4%
9 France 1 0.4%
10 Switzerland 1 0.4%