单词	retractable drive unit
释义	retractable drive unit 伸缩式推进装置
随便看	substructure condensation substructure construction substructure contract substructure cost substructured substructure dealing substructure diminishing method substructure discovery sub-structure displacement iteration method substructured pseudo-dynamic substructure for electrical device sub-structure formation substructure for religious belief substructure method sub-structure method Substructure mobility approach sub-structure model substructure mode synthesis sub-structure module substructure of bridge substructure of implant denture substructure pseudo-dynamic testing substructure reinforcemen substructures subsubroutine