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 281 72.1%
2 United States 49 12.6%
3 Germany 43 11%
4 Taiwan 5 1.3%
5 Canada 2 0.5%
6 South Africa 2 0.5%
7 Netherlands 2 0.5%
8 Norway 2 0.5%
9 Poland 1 0.3%
10 Russia 1 0.3%
11 Singapore 1 0.3%
12 Hong Kong 1 0.3%