实用的economic 实用practical 实用地practicabl 实用单位practical 实用率utility 实用钳economy 不能实用的unpractica 实用织物utility 实用升限practical 实用系统utility 最新单词 大胶质细胞英文怎么写及英文单词macroglia 大胡闹英文怎么写及英语单词charivari
2) operating ceiling 实际升限3) usable ceiling 可用升限4) opeating ciling 使用升限5) operating ceiling 实际上升限度6) ceiling [英]['si:lɪŋ] [美]['silɪŋ] 升限 1. The aim of adjusting fuel oil flow access of the aero-engine with a synthetical adjustior,is to resolve...