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 44 45.8%
2 United States 27 28.1%
3 Germany 8 8.3%
4 Netherlands 6 6.2%
5 Australia 4 4.2%
6 Singapore 2 2.1%
7 United Kingdom 1 1%
8 Hong Kong 1 1%
9 Korea, Republic of 1 1%
10 Canada 1 1%
11 France 1 1%