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 23 51.1%
2 Germany 8 17.8%
3 United States 4 8.9%
4 Netherlands 3 6.7%
5 Hong Kong 2 4.4%
6 Moldova, Republic of 1 2.2%
7 Russia 1 2.2%
8 Ukraine 1 2.2%
9 United Kingdom 1 2.2%
10 Viet Nam 1 2.2%