类型 | ①频率(MHz) | ② 换能器直径(mm) | ③焦距(mm) |
---|---|---|---|
PT | .7 | ||
PT20-6-30 | 20 | 6 | 三十 |
PT25-6-20 | 二十五 | 6 | 20 |
PT30-6-12.7 | 三十 | 6 | 12.7 |
PT35-6-30 | 三十五 | 6 | 三十 |
PT50-3-10 | 50 | 3 | 10 |
PT50-6-12.7 | 50 | 6 | 12.7 |
PT75-3-12.7 | 75 | 3 | 12.7 |
PT100-3-8 | 100 | 3 | 8 |
PT125-3-6 | 125 | 3 | 6 |