BPG致力于知识的发现和传播
Total Visits of This Article
2018 | 总访问次数
排名 国家/地区 数量 占比
1 United States 200 50.6%
2 China 139 35.2%
3 Germany 18 4.6%
4 France 15 3.8%
5 India 10 2.5%
6 Republic of Korea 6 1.5%
7 Australia 2 0.5%
8 Brazil 1 0.3%
9 Republic of Moldova 1 0.3%
10 Romania 1 0.3%
11 Ukraine 1 0.3%
12 Netherlands 1 0.3%