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 193 61.7%
2 United States 50 16%
3 Germany 44 14.1%
4 Taiwan 5 1.6%
5 France 4 1.3%
6 Korea, Republic of 4 1.3%
7 Singapore 3 1%
8 United Kingdom 3 1%
9 Netherlands 2 0.6%
10 India 2 0.6%
11 Canada 1 0.3%
12 Mexico 1 0.3%
13 Ukraine 1 0.3%