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 159 56%
2 United States 72 25.4%
3 Germany 33 11.6%
4 India 4 1.4%
5 Singapore 4 1.4%
6 Belarus 3 1.1%
7 Poland 3 1.1%
8 Austria 2 0.7%
9 Netherlands 2 0.7%
10 Portugal 1 0.4%
11 Moldova, Republic of 1 0.4%