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 United States 27 42.2%
2 China 15 23.4%
3 Germany 4 6.2%
4 Canada 3 4.7%
5 Japan 3 4.7%
6 Italy 2 3.1%
7 Australia 2 3.1%
8 Belgium 2 3.1%
9 Singapore 2 3.1%
10 Taiwan 2 3.1%
11 Hong Kong 1 1.6%
12 New Zealand 1 1.6%