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 United States 721 37.6%
2 China 416 21.7%
3 Netherlands 305 15.9%
4 Germany 123 6.4%
5 Canada 78 4.1%
6 Russia 36 1.9%
7 France 34 1.8%
8 Korea, Republic of 32 1.7%
9 Sweden 22 1.1%
10 India 17 0.9%
11 Hong Kong 15 0.8%
12 Iran, Islamic Republic of 10 0.5%
13 Egypt 9 0.5%
14 Ireland 9 0.5%
15 Taiwan 9 0.5%
16 Turkey 7 0.4%
17 United Kingdom 6 0.3%
18 Japan 6 0.3%
19 5 0.3%
20 Indonesia 3 0.2%
21 Italy 3 0.2%
22 Mexico 3 0.2%
23 Moldova, Republic of 3 0.2%
24 Norway 3 0.2%
25 Thailand 3 0.2%
26 Ukraine 2 0.1%
27 Syrian Arab Republic 2 0.1%
28 Slovakia 2 0.1%
29 Spain 2 0.1%
30 Viet Nam 2 0.1%
31 Pakistan 2 0.1%
32 Nigeria 2 0.1%
33 Malaysia 2 0.1%
34 Mauritius 2 0.1%
35 Algeria 2 0.1%
36 Ethiopia 2 0.1%
37 Finland 2 0.1%
38 Denmark 1 0.1%
39 Australia 1 0.1%
40 Bahrain 1 0.1%
41 Brazil 1 0.1%
42 Iraq 1 0.1%
43 Greece 1 0.1%
44 Morocco 1 0.1%
45 Kazakhstan 1 0.1%
46 Saudi Arabia 1 0.1%
47 Singapore 1 0.1%
48 Philippines 1 0.1%
49 Poland 1 0.1%
50 Romania 1 0.1%
51 Sri Lanka 1 0.1%
52 United Arab Emirates 1 0.1%