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 30 42.3%
2 United States 19 26.8%
3 Netherlands 8 11.3%
4 Czech Republic 3 4.2%
5 France 3 4.2%
6 Germany 3 4.2%
7 Hong Kong 2 2.8%
8 Norway 1 1.4%
9 Singapore 1 1.4%
10 United Kingdom 1 1.4%