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 56 49.1%
2 China 41 36%
3 Hong Kong 5 4.4%
4 France 3 2.6%
5 Germany 3 2.6%
6 Canada 2 1.8%
7 United Kingdom 2 1.8%
8 Moldova, Republic of 1 0.9%
9 Czech Republic 1 0.9%