biconcavity

基本解释

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。
Red blood cell with a biconcave disc shape is to provide a large surface area to volume ratio to facilitate the diffusion of gases. (NOT to carry more oxygen.
红血球的双凹面圆盘形可以增加它的表面积(不是增加它所带的氧气),以利气体的扩散。