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 178 61.2%
2 United States 59 20.3%
3 Germany 34 11.7%
4 Netherlands 5 1.7%
5 Taiwan 4 1.4%
6 Australia 2 0.7%
7 Russia 2 0.7%
8 Korea, Republic of 2 0.7%
9 Malaysia 2 0.7%
10 France 1 0.3%
11 Norway 1 0.3%
12 United Kingdom 1 0.3%