单词	preliminary operation
释义	preliminary operation初步操作機械工程
随便看	detachment fold detachment gravity slide detachment horizon detachment of artery detachment of axis-cylinder detachment of ciliary body detachment of ligament detachment of nerve detachment of periosteum detachment of periosteum--separation of periosteum detachment of plasma detachment of retina detachment of retina-- retinal sublation detachment of retina; retinal sublation detachment of vessel detachment of vitreous humor detachments detachment surface detachment thrust detachment zone detach terminal detach yourself deta (cvsd) modulation deta (cvsd) modulation-- continuous variable stope deta (cvsd) modulation， continuous variable stope