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 32 34%
2 China 31 33%
3 Netherlands 10 10.6%
4 Canada 5 5.3%
5 Japan 3 3.2%
6 Germany 3 3.2%
7 Hong Kong 2 2.1%
8 Indonesia 2 2.1%
9 Australia 2 2.1%
10 Singapore 2 2.1%
11 Turkey 1 1.1%
12 Korea, Republic of 1 1.1%