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 41 34.7%
2 Germany 23 19.5%
3 United States 20 16.9%
4 Netherlands 16 13.6%
5 Taiwan 5 4.2%
6 France 3 2.5%
7 India 2 1.7%
8 Portugal 2 1.7%
9 Switzerland 2 1.7%
10 Ukraine 1 0.8%
11 United Kingdom 1 0.8%
12 Moldova, Republic of 1 0.8%
13 Brazil 1 0.8%