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 183 55%
2 United States 79 23.7%
3 Germany 42 12.6%
4 Canada 5 1.5%
5 Taiwan 5 1.5%
6 Viet Nam 3 0.9%
7 Hong Kong 3 0.9%
8 Korea, Republic of 3 0.9%
9 Netherlands 2 0.6%
10 Norway 2 0.6%
11 France 2 0.6%
12 Singapore 2 0.6%
13 Denmark 1 0.3%
14 Russia 1 0.3%