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 189 51.4%
2 United States 103 28%
3 Germany 37 10.1%
4 Netherlands 28 7.6%
5 Russia 3 0.8%
6 Australia 2 0.5%
7 United Kingdom 2 0.5%
8 Taiwan 1 0.3%
9 Ireland 1 0.3%
10 Malaysia 1 0.3%
11 Moldova, Republic of 1 0.3%