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 57 73.1%
2 United States 6 7.7%
3 Germany 5 6.4%
4 Venezuela, Bolivarian Republic of 2 2.6%
5 Australia 1 1.3%
6 Austria 1 1.3%
7 Brazil 1 1.3%
8 India 1 1.3%
9 Malaysia 1 1.3%
10 Slovenia 1 1.3%
11 Switzerland 1 1.3%
12 Ukraine 1 1.3%