即发（瞬发）雷管

instantaneous detonator

• ukulele
• ulan bator
• ulanova，galina
• ulan ude
• ulbricht，walter
• ulcer
• uleaborg
• ullmann，liv
• ullswater
• ulm
• ulm，battle of
• ulna
• ulster
• ulterior
• ultima
• ultimacy
• ultimate
• ultimatum
• ultimo
• ultra
• ultraconservatism
• ultraleftist
• ultraliberal
• ultramarine
• ultramicroscope