dielectic coated grating
镀介质光栅

• digital computer holography
• digital control system
• digital counter
• digital cross connect Ssstem equipment
• digital cross connectsystem equipment
• Digital Cross Connect System Equipment 1
• digital data wash
• digital-deflection
• undercharge
• undercolour removal
• undercompensation
• undercorrected lens
• undercorrection
• undercoupling
• undercurrent
• underdamping
• underdense
• underdeterminant
• underdevelopment
• underexcitation
• under-exposed
• under exposure
• underlagged
• underload
• undermined-phase technique