词语双凹透镜
解释double concave glass
double concave glass〔名词〕双凹透镜详细»
双凹透镜biconcave lens;double concave glass;double concave lens详细»
双凹透镜biconcave lens详细»
双凹透镜biconcave lens;concavo-concave lens;double concave lens详细»