双语例句
The basic feature and principle of progressive addition lens (PAL) are introduced. Its soft design method based on Dirichlet principle was given.
介绍了渐变镜片的基本结构及工作原理，给出其基于狄利克雷条件的软设计方法。
词典释义：
progressive lens
时间: 2025-10-28 13:30:58
渐进透镜