aperture signal coupling lever
光圈指示连动杆

• diamond paste
• diamond pellet
• diamond powder
• diamond prinding wheel
• diamond saw
• diamond stop
• diamond turning
• diamond whel
• diaphaneity
• diaphanous
• diaphragm
• diaphragm gauge
• diaphragm setting lever
• diaphragm-spot
• diaphyanometer
• diapoint
• diapositive
• diapositive emulsion
• diascope
• diastimeter
• diathermancy
• diatomic
• diatomic molecule
• diatomic roto
• diatomic sulfur