单词	optics device
释义	optics device 光学器件
随便看	rectangular rosette rectangular rule rectangular sandwich board rectangular scanning Rectangular seals rectangular search rectangular secondary settling tanks rectangular shock pulse rectangular shoulder of packaging machines rectangular signal Rectangular singular system rectangular singular systems rectangular section rectangular-section rectangular section beam rectangular section column Rectangular-section concrete pier rectangular section flume rectangular section hose rectangular section ring rectangular sections rectangular section tube rectangular section vessel rectangular section volute spring rectangular sedimentation tank