权威例句
Lamp holder
Lamp holder
Lamp holder
Lampholder with current tap
Lampholder with universal joint
Lampholder with occupancy sensor
E26 plastic lampholder
BALLAST WITH LAMPHOLDER ARC PROTECTION
Lamp locking lampholder for tubular lamps
Lampholder unit, particularly for refrigerators and the like
Plug wire type zipper switch lampholder
DEPARTMENT OF TRANSPORTATION, FEDERAL AVIATION ADMINISTRATION SPECIFICATION: PAR-56 LAMPHOLDER
Holder element for holding at least one flat surface-light lamp, set of a plurality of lampholders and a plurality of elongate holdi...