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 282 44.6%
2 United States 160 25.3%
3 Netherlands 96 15.2%
4 Germany 63 10%
5 Canada 10 1.6%
6 France 5 0.8%
7 Romania 3 0.5%
8 United Kingdom 3 0.5%
9 Ukraine 2 0.3%
10 Hong Kong 2 0.3%
11 India 2 0.3%
12 Korea, Republic of 2 0.3%
13 Moldova, Republic of 2 0.3%