- 放大器 fàngdàqì amplifier
- 放大镜 fàngdàjìng magnifiermagnifying glass
- 放大炮 fàngdàpào blusterto shoot one's mouth off or make provocative, blunt, or startling remarks
- 放大纸 fàngdàzhǐ enlarging paperlight-sensitive paper used in photography for making enlarged prints from negatives, such as bromide paper
- 模拟放大器 mónǐfàngdàqì analog amplifier
- 放大倍数 fàngdàbèishù magnificationthe factor by which an object's apparent size is increased through a lens or electronic system
- 放大片 fàngdàpiàn circle lenscosmetic contact lenses designed to make the iris appear larger and more distinct
- 仪表放大器 yíbiǎofàngdàqì instrumentation amplifier
