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 United States 49 38%
2 China 43 33.3%
3 Germany 13 10.1%
4 Netherlands 12 9.3%
5 Canada 7 5.4%
6 Hong Kong 2 1.6%
7 Lao People's Democratic Republic 2 1.6%
8 Cambodia 1 0.8%