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 United States 22 29.3%
2 China 17 22.7%
3 Germany 13 17.3%
4 Netherlands 10 13.3%
5 France 6 8%
6 North Macedonia 2 2.7%
7 Hong Kong 2 2.7%
8 Czech Republic 1 1.3%
9 Norway 1 1.3%
10 Ukraine 1 1.3%