与"optical emission spectrograph"相近的词条

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• optical distance indicator
• optical dividing head
• optical Doppler effect
• optical efficiency
• optical element
• optical emission spectrograph
• optical emission spectrography
• optical emission spectroscopg
• optical encoder
• optical energy
• optical exaltation
• optical excitation
• optical extensometer
• optical face
• optical feeler
• optical fibe

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