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 155 48%
2 United States 101 31.3%
3 Germany 33 10.2%
4 Malaysia 6 1.9%
5 Australia 4 1.2%
6 Taiwan 4 1.2%
7 Singapore 4 1.2%
8 Hong Kong 3 0.9%
9 Japan 2 0.6%
10 Spain 2 0.6%
11 Norway 2 0.6%
12 Russia 2 0.6%
13 Canada 2 0.6%
14 Brazil 1 0.3%
15 Bulgaria 1 0.3%
16 Moldova, Republic of 1 0.3%