total diffuse reflection
全漫反射

• drum cam
• drum camera
• drum dial
• drum lens
• drum reading
• drum scanner
• drum storage
• drunkenness error
• dry battery
• dry cell
• dryer
• dry-ic
• dry lens
• dryness
• dry objective
• dry photopolymer film
• DTL
• DTR Process
• DT target
• dual
• dual beam interferometer
• dual-cavity laser
• dual flank gear rolling tester
• dual frequency dye laser
• dual-grating spectrography