短語詞組短語converging g lens 凸透鏡;會(huì)聚透鏡converging meniscus lens 弦月會(huì)聚透鏡zero converging lens 無會(huì)聚透鏡converging concavo -convex lens 聚點(diǎn)凹凸透鏡 返回 converging lens