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 28 36.8%
2 China 12 15.8%
3 Germany 11 14.5%
4 10 13.2%
5 Japan 4 5.3%
6 Republic of Korea 3 3.9%
7 Israel 2 2.6%
8 Algeria 2 2.6%
9 Canada 1 1.3%
10 France 1 1.3%
11 Netherlands 1 1.3%
12 Iran 1 1.3%