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 278 41.3%
2 United States 158 23.5%
3 Netherlands 104 15.5%
4 Germany 74 11%
5 Canada 15 2.2%
6 Sweden 11 1.6%
7 Hong Kong 10 1.5%
8 India 6 0.9%
9 France 4 0.6%
10 Russia 4 0.6%
11 Norway 3 0.4%
12 United Kingdom 2 0.3%
13 Singapore 1 0.1%
14 Ukraine 1 0.1%
15 Portugal 1 0.1%
16 Korea, Republic of 1 0.1%