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 199 55.3%
2 United States 79 21.9%
3 Germany 40 11.1%
4 Canada 16 4.4%
5 Korea, Republic of 8 2.2%
6 Russia 4 1.1%
7 Sweden 4 1.1%
8 Macao 3 0.8%
9 Singapore 2 0.6%
10 New Zealand 2 0.6%
11 Uzbekistan 2 0.6%
12 Netherlands 1 0.3%