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 37 39.8%
2 United States 19 20.4%
3 Germany 17 18.3%
4 Netherlands 12 12.9%
5 Hong Kong 3 3.2%
6 Moldova, Republic of 1 1.1%
7 France 1 1.1%
8 Norway 1 1.1%
9 Taiwan 1 1.1%
10 Canada 1 1.1%