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 312 46.2%
2 United States 148 21.9%
3 Netherlands 102 15.1%
4 Germany 33 4.9%
5 Taiwan 31 4.6%
6 Canada 20 3%
7 Hong Kong 9 1.3%
8 Malaysia 5 0.7%
9 United Kingdom 4 0.6%
10 France 4 0.6%
11 Brazil 2 0.3%
12 Bulgaria 1 0.1%
13 1 0.1%
14 Kazakhstan 1 0.1%
15 Mauritius 1 0.1%
16 New Zealand 1 0.1%
17 Singapore 1 0.1%