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 213 47.3%
2 United States 185 41.1%
3 Germany 27 6%
4 Hong Kong 11 2.4%
5 Japan 6 1.3%
6 Korea, Republic of 2 0.4%
7 Malaysia 1 0.2%
8 Mexico 1 0.2%
9 Netherlands 1 0.2%
10 Switzerland 1 0.2%
11 Taiwan 1 0.2%
12 Denmark 1 0.2%