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 28 40%
2 United States 24 34.3%
3 Germany 8 11.4%
4 Canada 2 2.9%
5 Netherlands 2 2.9%
6 Portugal 2 2.9%
7 Taiwan 1 1.4%
8 Australia 1 1.4%
9 Hong Kong 1 1.4%
10 Korea, Republic of 1 1.4%