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 173 49.9%
2 United States 104 30%
3 Germany 33 9.5%
4 Netherlands 18 5.2%
5 Korea, Republic of 5 1.4%
6 Taiwan 4 1.2%
7 United Kingdom 3 0.9%
8 Singapore 2 0.6%
9 Greece 2 0.6%
10 Czech Republic 2 0.6%
11 Moldova, Republic of 1 0.3%