thin film optical shutter
薄膜光学快门

• spiropyrace
• spivot
• splash lubrication
• splice
• splice loss
• splicer
• spline
• spline ga(u)ge
• spline plug ga(u)ge
• spline shaft
• spling ring ga(u)ge
• split-beam hologram
• split bearing
• split bubble level
• split cotter
• split diaphragm
• split field
• split-field analyser
• split-field lens
• split-field photometry
• split-flow
• split focus
• split gear
• split-hair accuracy
• split image rangefinder