常見例句A planoconvex lens used to concentrate light. 凸透鏡用來聚光的凸鏡Seeds small, obovate, angular and wingless or planoconvex with a narrow marginal wing; 種子小，倒卵形，具角和無翼的或平凸具一個狹窄的邊緣的翅；a planoconvex lens. 平凸透鏡planoconvex spotlight 平凸型聚光燈planoconvex lenses 平凸鏡片, 平凸透鏡 返回 planoconvex