BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 United States 42 48.8%
2 Hong Kong 15 17.4%
3 China 11 12.8%
4 Moldova, Republic of 6 7%
5 France 5 5.8%
6 Germany 4 4.7%
7 Canada 1 1.2%
8 Peru 1 1.2%
9 Tanzania, United Republic of 1 1.2%