单词	痕量级
释义	痕量级trace level
随便看	aircraft classification number aircraft classification number (acn) aircraft classification number(acn) aircraft; clean aircraft cleaning truck aircraft clearance aircraft cloth aircraft-- combat aircraft; combat aircraft; commercial aircraft communication electronic signaling system aircraft communication electronic signaling system 　(access) aircraft communication electronic signaling system 　{=access} aircraft-community noise aircraft computers aircraft condition monitoring system aircraft condition monitoring system (acms) aircraft configuration aircraft construction aircraft--construction aircraft contrail aircraft control aircraft control and warning system aircraft controller aircraft control ship