轻型
qīng xíng · HSK 7
light
🚁 轻 light-weight + 型 type/model = the light-duty class of machine or aircraft
轻 qīng is light in weight (the heart-light radical pair); 型 xíng is type or model, as in 型号. Together: the light-type category, used for light machinery, light aircraft, and light vehicles versus heavy-duty 重型.
轻 — vehicle radical 车 + 巠 (phonetic)
轻 is a semantic-phonetic compound. The left side 车 (vehicle) gives the meaning, originally referring to a light, swift chariot. The right side 巠 supplies the sound. Over time the meaning broadened from 'light cart' to 'light in weight' and figuratively 'slight' or 'gentle'.
型 — earth 土 + 刑 (xíng, phonetic)
型 is a semantic-phonetic compound. The 土 (earth) component points to its original meaning: a clay or earthen mold used for casting. The right side 刑 supplies the sound. From 'casting mold' it broadened to mean 'model, type, pattern' in modern usage.