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 89 54.6%
2 United States 27 16.6%
3 Netherlands 13 8%
4 Germany 11 6.7%
5 Canada 8 4.9%
6 Korea, Republic of 4 2.5%
7 Japan 3 1.8%
8 Ukraine 2 1.2%
9 Malaysia 2 1.2%
10 Hong Kong 2 1.2%
11 Australia 1 0.6%
12 France 1 0.6%