单词	converging lens
释义	converging lens noun : a lens that causes parallel rays (as of light) to come to a focus Illustration of converging lens S light source L lens F focal point Word History First Known Use 1860, in the meaning defined above
随便看	synnema synnemata synneurosis synod synodal synodalist synodals synodic synodic month synodic period synodical synodicon synodist Synodontidae synodontidaes synods synodsman synodsmen synoecete synoecetes synoecioses synoecious synoeciously synoeciousness synoecise

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