单词	iris diaphragm
释义	iris diaphragm noun : an adjustable diaphragm of thin opaque plates that can be turned by a ring so as to change the diameter of a central opening usually to regulate the aperture of a lens (as in a camera or microscope)
随便看	schwartzembergite schwarz schwarzbrot schwarzschild schwarzschild radius schwedler's schwedler's maple schwegel schweinfurt Schweinfurt Schweinfurt green schweinfurt green schweinfurth schweinfurth green schweitzer's schweitzer's reagent schweizerdeutsch Schweizer's schweizer's schweizer's reagent Schweizer's reagent schwenkfelder schwenkfeldian schwyz schwyzer

英语词典包含332784条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。