plano-concave的翻译，读音
英/,pleinәj'kɔnkeiv,-kɔn'keiv/
释义：
a. (透镜)平凹的
a. Plane or flat on one side, and concave on the other;
as, a plano-concave lens. See Lens.
a. Plane or flat on one side, and concave on the other;
as, a plano-concave lens. See Lens.