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 169 56.7%
2 United States 50 16.8%
3 Germany 43 14.4%
4 Netherlands 24 8.1%
5 France 3 1%
6 Canada 2 0.7%
7 Ukraine 2 0.7%
8 Australia 1 0.3%
9 Singapore 1 0.3%
10 Thailand 1 0.3%
11 Ireland 1 0.3%
12 Korea, Republic of 1 0.3%