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 219 55%
2 United States 81 20.4%
3 Germany 43 10.8%
4 Netherlands 26 6.5%
5 Canada 10 2.5%
6 India 3 0.8%
7 Taiwan 3 0.8%
8 Malaysia 2 0.5%
9 Norway 2 0.5%
10 Korea, Republic of 2 0.5%
11 France 2 0.5%
12 Bulgaria 1 0.3%
13 Macao 1 0.3%
14 Russia 1 0.3%
15 Singapore 1 0.3%
16 Mauritius 1 0.3%