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 40 44%
2 China 24 26.4%
3 Germany 10 11%
4 India 4 4.4%
5 France 3 3.3%
6 Brazil 2 2.2%
7 Netherlands 2 2.2%
8 Hong Kong 2 2.2%
9 Norway 1 1.1%
10 Ukraine 1 1.1%
11 United Kingdom 1 1.1%
12 Canada 1 1.1%