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 370 72.8%
2 United States 51 10%
3 Germany 50 9.8%
4 Singapore 11 2.2%
5 Spain 5 1%
6 Canada 5 1%
7 Malaysia 3 0.6%
8 France 3 0.6%
9 Australia 3 0.6%
10 Moldova, Republic of 2 0.4%
11 Norway 2 0.4%
12 Hong Kong 2 0.4%
13 Brazil 1 0.2%