| 释义 |
〔opacifier〕A chemical agent added to a material, such as rocket propellant, to make it opaque.遮光剂:在物质中添加一种化学添加剂,如加在火箭助推器中,使之不反光〔booster〕The primary stage of a multistage rocket that provides the main thrust for launch, liftoff, and initial flight.助推器:多级火箭的第一级,为发射、升空和最初飞行提供主要推力 |