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 304 41.1%
2 United States 177 23.9%
3 Netherlands 138 18.6%
4 Germany 52 7%
5 Canada 26 3.5%
6 France 9 1.2%
7 Hong Kong 6 0.8%
8 Norway 6 0.8%
9 United Kingdom 6 0.8%
10 India 5 0.7%
11 Russia 4 0.5%
12 Ukraine 3 0.4%
13 Bulgaria 2 0.3%
14 Italy 1 0.1%
15 Malaysia 1 0.1%