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 United States 35 34.3%
2 China 18 17.6%
3 Germany 10 9.8%
4 Netherlands 10 9.8%
5 Canada 9 8.8%
6 Taiwan 4 3.9%
7 Russia 3 2.9%
8 Singapore 3 2.9%
9 Japan 3 2.9%
10 Malaysia 3 2.9%
11 Hong Kong 2 2%
12 Australia 1 1%
13 Ukraine 1 1%