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 43 44.8%
2 United States 25 26%
3 Netherlands 11 11.5%
4 Korea, Republic of 6 6.2%
5 Singapore 4 4.2%
6 Germany 2 2.1%
7 Albania 2 2.1%
8 Australia 1 1%
9 Canada 1 1%
10 Russia 1 1%