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condenser adjustment knob /kəndˈɛnsəɹ ɐdʒˈʌstmənt ˈnɒb/ n

中文：聚光镜调节钮

中文 · 聚光镜调节钮Español · tornillo de ajuste del condensadorFrançais · vis de réglage du condenseur
Meaning：Screw that centers the condenser’s light beam in the field of vision by moving it along a horizontal plane.
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Binocular microscope

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