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 58 67.4%
2 Germany 8 9.3%
3 United States 8 9.3%
4 Netherlands 5 5.8%
5 Poland 2 2.3%
6 Hong Kong 2 2.3%
7 Korea, Republic of 1 1.2%
8 France 1 1.2%
9 Taiwan 1 1.2%