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 United States 86 40.4%
2 China 74 34.7%
3 Canada 12 5.6%
4 Germany 12 5.6%
5 Netherlands 12 5.6%
6 Indonesia 4 1.9%
7 Australia 3 1.4%
8 France 3 1.4%
9 Russia 3 1.4%
10 Korea, Republic of 2 0.9%
11 India 2 0.9%