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 309 40.2%
2 China 199 25.9%
3 Netherlands 109 14.2%
4 France 50 6.5%
5 Germany 49 6.4%
6 Canada 20 2.6%
7 Taiwan 9 1.2%
8 Hong Kong 8 1%
9 Portugal 7 0.9%
10 Senegal 3 0.4%
11 Spain 3 0.4%
12 Norway 1 0.1%
13 Malaysia 1 0.1%