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 41.7%
2 United States 22 21.4%
3 Netherlands 14 13.6%
4 Taiwan 9 8.7%
5 Germany 6 5.8%
6 Hong Kong 4 3.9%
7 France 2 1.9%
8 India 1 1%
9 Moldova, Republic of 1 1%
10 Australia 1 1%