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 173 46.1%
2 United States 141 37.6%
3 Germany 33 8.8%
4 Hong Kong 9 2.4%
5 Ireland 5 1.3%
6 4 1.1%
7 Korea, Republic of 3 0.8%
8 India 2 0.5%
9 Australia 2 0.5%
10 Czech Republic 2 0.5%
11 Singapore 1 0.3%