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 240 50.7%
2 United States 133 28.1%
3 Germany 39 8.2%
4 Canada 19 4%
5 Hong Kong 17 3.6%
6 Korea, Republic of 6 1.3%
7 Taiwan 5 1.1%
8 Malaysia 3 0.6%
9 Netherlands 3 0.6%
10 Australia 2 0.4%
11 Singapore 2 0.4%
12 Switzerland 2 0.4%
13 Belgium 1 0.2%
14 Norway 1 0.2%