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 172 51.3%
2 United States 46 13.7%
3 Netherlands 34 10.1%
4 Germany 32 9.6%
5 Canada 22 6.6%
6 Singapore 10 3%
7 Malaysia 4 1.2%
8 Korea, Republic of 3 0.9%
9 3 0.9%
10 Belgium 2 0.6%
11 India 2 0.6%
12 Moldova, Republic of 2 0.6%
13 Norway 1 0.3%
14 Ireland 1 0.3%
15 France 1 0.3%