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 China 202 61.2%
2 United States 45 13.6%
3 Germany 40 12.1%
4 Netherlands 21 6.4%
5 Canada 6 1.8%
6 Korea, Republic of 4 1.2%
7 Malaysia 3 0.9%
8 Australia 2 0.6%
9 Costa Rica 2 0.6%
10 Russia 2 0.6%
11 Ukraine 1 0.3%
12 Romania 1 0.3%
13 Iraq 1 0.3%