单词：plano-convex
音标：[,pleinәj'kɔnveks,-kɔn'veks] ；
a. (透镜)平凸的
a. Plane or flat on one side, and convex on the other;
as, a plano-convex lens. See Convex, and Lens.
as, a plano-convex lens. See Convex, and Lens.
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