BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 29 29.3%
2 United States 26 26.3%
3 Germany 20 20.2%
4 Taiwan 7 7.1%
5 Canada 5 5.1%
6 Hong Kong 4 4%
7 France 2 2%
8 1 1%
9 Japan 1 1%
10 North Macedonia 1 1%
11 Portugal 1 1%
12 Russia 1 1%
13 Ukraine 1 1%