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 180 72.6%
2 United States 30 12.1%
3 Germany 19 7.7%
4 Canada 4 1.6%
5 Hong Kong 3 1.2%
6 Netherlands 3 1.2%
7 Thailand 2 0.8%
8 Czech Republic 2 0.8%
9 Korea, Republic of 2 0.8%
10 Luxembourg 2 0.8%
11 Ukraine 1 0.4%