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 55.5%
2 United States 49 19.8%
3 Netherlands 25 10.1%
4 Germany 18 7.3%
5 Canada 6 2.4%
6 France 2 0.8%
7 Singapore 2 0.8%
8 Taiwan 2 0.8%
9 United Kingdom 2 0.8%
10 Hong Kong 2 0.8%
11 Korea, Republic of 1 0.4%
12 Austria 1 0.4%