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 48 42.5%
2 United States 34 30.1%
3 Netherlands 7 6.2%
4 France 6 5.3%
5 India 5 4.4%
6 Korea, Republic of 4 3.5%
7 Senegal 4 3.5%
8 Brazil 2 1.8%
9 Switzerland 1 0.9%
10 New Zealand 1 0.9%
11 Macao 1 0.9%