当量剂量

• 口(mouth; sound)RADICAL
• 當(equivalent; opportune)PHONETIC

The sound of a bell ringing from an opening makes a "clanging" noise that rings out at just the right moment.

• 旦(dawn; daybreak)PHONETIC
• 里(village; mile (unit of measurement))RADICAL

Measure each mile of the road right from dawn's first light.

• 齐(even; orderly)PHONO-SEMANTIC
• 刂(knife radical)RADICAL

Using a knife to cut evenly creates the proper dose of medicine.