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 276 56%
2 United States 93 18.9%
3 Germany 40 8.1%
4 Netherlands 33 6.7%
5 Canada 30 6.1%
6 Spain 5 1%
7 Finland 3 0.6%
8 Hong Kong 2 0.4%
9 Ecuador 2 0.4%
10 United Kingdom 2 0.4%
11 New Zealand 2 0.4%
12 Singapore 1 0.2%
13 Australia 1 0.2%
14 Austria 1 0.2%
15 Bulgaria 1 0.2%
16 Korea, Republic of 1 0.2%