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 37 37%
2 China 34 34%
3 Netherlands 9 9%
4 Korea, Republic of 5 5%
5 Germany 3 3%
6 Hong Kong 3 3%
7 New Zealand 2 2%
8 Taiwan 2 2%
9 Czech Republic 2 2%
10 France 1 1%
11 Belgium 1 1%
12 Canada 1 1%