coefficient of reflection
反射系数

• energy spectrum
• energy state
• energy supply
• energy transfer
• energy-valley
• engagement
• engergetica emission
• engergization
• engergy
• engine
• engineer
• engineering drawing
• engineering theodolite
• Engler degree
• Engler viscosity
• English system
• engraving
• enhanced focal-plane irradiance
• enhanced line
• enhanced responsivity
• enhance spectrum
• enlarged scale
• enlarged view
• enlargin apparatus
• enlarging lens