adj.两面凹的
Concave on both surfaces;biconcave. 双面均凹进的；
In most mammals mature erythrocytes are biconcave disks that have no nuclei. 在多数哺乳动物中，成熟红细胞呈双凹面盘样，无细胞核。
Of biconcave of computer clavier biconvex sheltered evil people and practices the most easily, cleanness rises special inconvenience. 电脑键盘凸凸凹凹的最轻易藏污纳垢了，清洁起来非常不方便。
This article introduces rolling installment structure of the biconcave slide wedge shaped lamina and the parameter of motion design. 介绍了双凹面斜楔形薄板辊轧装置结构和运动参数设计。
This CBC demonstrates findings suggestive of spherocytosis, a condition in which the RBC's are small and round (rather than the normal biconcave appearance) with increased hemoglobin content. 大多数RBC体积很小，并且缺乏中部苍白的区域，是球形红细胞。
