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 550 77.2%
2 United States 78 11%
3 Germany 31 4.4%
4 Hong Kong 12 1.7%
5 Canada 10 1.4%
6 Malaysia 6 0.8%
7 Taiwan 4 0.6%
8 Netherlands 4 0.6%
9 Peru 3 0.4%
10 Japan 3 0.4%
11 Albania 2 0.3%
12 Cambodia 2 0.3%
13 Romania 2 0.3%
14 Singapore 2 0.3%
15 Norway 1 0.1%
16 Moldova, Republic of 1 0.1%
17 Korea, Republic of 1 0.1%