BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 United States 29 33.7%
2 China 27 31.4%
3 Germany 17 19.8%
4 Hong Kong 3 3.5%
5 Moldova, Republic of 2 2.3%
6 France 2 2.3%
7 Canada 2 2.3%
8 Taiwan 2 2.3%
9 Netherlands 1 1.2%
10 Portugal 1 1.2%