関連ワード:  function of arm in light microscope    function of diaphragm in light microscope    function of mirror in light microscope    function of base in light microscope    function of body tube in light microscope    function of revolving nosepiece in light microscope    function of arm in compound light microscope    function of iris diaphragm in light microscope    function of revolving nosepiece in compound light microscope    function of base in compound light microscope