plano-concave /,pleinәj'kɔnkeiv,-kɔn'keiv/ 📖 中文释义 a. (透镜)平凹的 📘 English Definition(英文释义) a. Plane or flat on one side, and concave on the other;as, a plano-concave lens. See Lens. ← plano- P 字母词表 plano-convex →