BPG致力于知识的发现和传播
Total Visits of This Article
2019 | 总访问次数
排名 国家/地区 数量 占比
1 695 81.8%
2 United States 68 8%
3 China 52 6.1%
4 Germany 14 1.6%
5 France 10 1.2%
6 Hong Kong 2 0.2%
7 Belgium 2 0.2%
8 Canada 2 0.2%
9 Australia 1 0.1%
10 Norway 1 0.1%
11 Russia 1 0.1%
12 Taiwan 1 0.1%
13 Ukraine 1 0.1%