空中英慣用短語:
  •   空腔加速器   cavity accelerator
  •   空腔振蕩器   cavity oscillator
  •   空腔振蕩器   hollow-space oscillator
  •   空腔振蕩電路   cavity circuit
  •   空腔濾波器   cavity filter
  •   空腔電離室   cavity ionization chamber
  •   空腔穩頻振蕩器   cavitstabilized oscillator
  •   空腔腐   cavitation attack
  •   空腔腐   cavitation corrosion
  •   空腔諧振   cavity resonance
  •   空腹擱柵   open web joist
  •   空腹時, 餓肚子, 絶食   on an empty stomach
  •   空腹耐熱鋼爐輥連續退火機組   continuous annealing unit with open web heat resistant steel rollers
  •   空腹薄壁大門   hollow thin wall gate
  •   空腹薄壁平開門   hollow thin wall door
  •   空腹薄壁推拉門   hollow thin wall sliding door