BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 74 50%
2 United States 30 20.3%
3 Germany 14 9.5%
4 Netherlands 12 8.1%
5 Taiwan 5 3.4%
6 Hong Kong 3 2%
7 Korea, Republic of 3 2%
8 Canada 2 1.4%
9 Singapore 2 1.4%
10 Portugal 1 0.7%
11 France 1 0.7%
12 United Kingdom 1 0.7%