与"double concave lens"相近的词条

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• double committed ventricular septal defect
• double compression
• double concave
• double concave glass
• double concave glasses
• double concave lens
• double condenser
• double cone
• double cone classifier
• double-cone dryer
• double-cone mixer
• double-cone rotary vacuum dryer
• double cones
• double congenital athetosis
• double consciousness
• double-contact

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