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 50%
2 United States 19 23.2%
3 Germany 5 6.1%
4 Netherlands 5 6.1%
5 Canada 3 3.7%
6 Portugal 2 2.4%
7 Russia 2 2.4%
8 Taiwan 1 1.2%
9 United Kingdom 1 1.2%
10 Australia 1 1.2%
11 France 1 1.2%
12 Japan 1 1.2%