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 319 52.2%
2 United States 112 18.3%
3 Netherlands 68 11.1%
4 Germany 65 10.6%
5 Canada 26 4.3%
6 France 8 1.3%
7 Taiwan 4 0.7%
8 India 3 0.5%
9 South Africa 2 0.3%
10 Hong Kong 2 0.3%
11 Norway 1 0.2%
12 Brazil 1 0.2%