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 157 42%
2 United States 137 36.6%
3 Germany 41 11%
4 Taiwan 16 4.3%
5 Malaysia 5 1.3%
6 Austria 3 0.8%
7 Russia 3 0.8%
8 Australia 2 0.5%
9 Brazil 2 0.5%
10 Canada 2 0.5%
11 Hong Kong 2 0.5%
12 Japan 1 0.3%
13 Macao 1 0.3%
14 Netherlands 1 0.3%
15 Switzerland 1 0.3%