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 44 41.9%
2 United States 20 19%
3 Taiwan 13 12.4%
4 Germany 11 10.5%
5 Singapore 8 7.6%
6 Canada 3 2.9%
7 Spain 2 1.9%
8 Hong Kong 1 1%
9 Brazil 1 1%
10 France 1 1%
11 United Kingdom 1 1%