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 227 63.4%
2 Germany 53 14.8%
3 United States 45 12.6%
4 Taiwan 14 3.9%
5 Russia 5 1.4%
6 United Kingdom 3 0.8%
7 Hong Kong 3 0.8%
8 Japan 2 0.6%
9 Korea, Republic of 2 0.6%
10 Malaysia 2 0.6%
11 Turkey 1 0.3%
12 Congo, The Democratic Republic of The 1 0.3%