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 247 64.5%
2 United States 49 12.8%
3 Germany 36 9.4%
4 Netherlands 28 7.3%
5 Canada 6 1.6%
6 Malaysia 5 1.3%
7 Hong Kong 3 0.8%
8 Japan 2 0.5%
9 Australia 2 0.5%
10 Taiwan 2 0.5%
11 Russia 1 0.3%
12 Algeria 1 0.3%
13 Korea, Republic of 1 0.3%