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 United States 36 32.4%
2 China 17 15.3%
3 Netherlands 16 14.4%
4 Germany 14 12.6%
5 Japan 5 4.5%
6 France 5 4.5%
7 Taiwan 5 4.5%
8 Bulgaria 4 3.6%
9 Australia 2 1.8%
10 Korea, Republic of 2 1.8%
11 India 2 1.8%
12 Russia 2 1.8%
13 Ukraine 1 0.9%