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 216 60.3%
2 United States 69 19.3%
3 Germany 33 9.2%
4 Canada 13 3.6%
5 Singapore 6 1.7%
6 Hong Kong 6 1.7%
7 Taiwan 5 1.4%
8 Pakistan 4 1.1%
9 Russia 4 1.1%
10 Turkey 1 0.3%
11 Brazil 1 0.3%