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 40 43%
2 United States 21 22.6%
3 Netherlands 12 12.9%
4 Canada 5 5.4%
5 Brazil 4 4.3%
6 Singapore 4 4.3%
7 Taiwan 3 3.2%
8 Korea, Republic of 2 2.2%
9 Turkey 1 1.1%
10 Germany 1 1.1%