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 165 53.4%
2 United States 59 19.1%
3 Germany 42 13.6%
4 Canada 18 5.8%
5 Singapore 6 1.9%
6 Malaysia 5 1.6%
7 Netherlands 4 1.3%
8 New Zealand 3 1%
9 Korea, Republic of 3 1%
10 Japan 2 0.6%
11 Italy 1 0.3%
12 Russia 1 0.3%