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 177 63.4%
2 United States 50 17.9%
3 Germany 38 13.6%
4 Hong Kong 5 1.8%
5 Taiwan 4 1.4%
6 Singapore 2 0.7%
7 Switzerland 1 0.4%
8 Czech Republic 1 0.4%
9 France 1 0.4%