Thoob ntiaj teb ESD khau size sib piv cov lus, Peb yuav tsum paub thaum twg yuav cov khau ESD
Qhov loj ntawm lub khau, tseem hu ua khau loj, feem ntau pom muaj nyob hauv cov qauv hauv qab no: International, European, American, thiab British.
Lub thoob ntiaj teb tus qauv khau loj qhia tias tus naj npawb ntawm millimeters ntawm ko taw ntev.
Suav cov qauv siv millimetres lossis centimeters. Piv txwv li, 245 yog cov millimeters, thiab 24 1/2 yog tus naj npawb ntawm cov npau suav, qhia txog tib qho loj.
Cov qauv hloov tshiab:
Centimeter × 2-10 = European (European +10) ÷ 2 = Centimeter
Centimeter -18 + 0.5 = US system US + 18-0.5 = cm naj npawb
Centimeter -18-0.5 = Inch Imperial + 18 + 0.5 = cm
US / Canada | Suav teb | Suav teb | Australia | Teb chaws Europe | Mexico | Nyiv | UK |
5 | 38 | 24 | 4.5 | 37.5 | - | - | 4.5 |
5.5 | 39 | 24.5 | 5 | 38 | - | - | 5 |
6 | 39.5 | 24.5 | 5.5 | 38.5 | 25 | 24 | 5.5 |
6.5 | 40 | 25 | 6 | 39 | - | 24.5 | 6 |
7 | 41 | 25.5 | 6.5 | 40 | 26 | 25 | 6.5 |
7.5 | - | 7 | 40.5 | - | 25.5 | 7 | |
8 | 42 | 26 | 7.5 | 41 | 27 | - | 7.5 |
8.5 | 43 | 26.5 | 8 | 42 | - | 26 | 8 |
9 | 43.5 | 26.5 | 8.5 | 42.5 | 28 | 26.5 | 8.5 |
9.5 | 44 | 27 | 9 | 43 | - | 27 | 9 |
10 | 44.5 | 27 | 9.5 | 44 | 29 | 27.5 | 9.5 |
10.5 | 45 | 27.5 | 10 | 44.5 | - | 28 | 10 |
11 | 46 | 28 | - | 45 | 30 | 29 | 10.5 |
11.5 | - | 11 | 45.5 | - | 29.5 | - | |
12 | 47 | 28.5 | - | 46 | 31 | 30 | - |
13 | 48.5 | 28.5 | 12 | 47.5 | 32 | 31 | - |
