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 136 56%
2 United States 41 16.9%
3 Germany 31 12.8%
4 Netherlands 15 6.2%
5 Canada 7 2.9%
6 Mexico 3 1.2%
7 Turkmenistan 3 1.2%
8 Taiwan 2 0.8%
9 France 2 0.8%
10 Austria 1 0.4%
11 Moldova, Republic of 1 0.4%
12 Russia 1 0.4%