Concave on both surfaces; biconcave.
双面均凹进的；双凹的。
Biconcave: concave on both sides or surfaces.
两面凹的：两侧或两面凹陷的。
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。
The red cells have a spherical rather than the biconcave-disk shape of the normal red cell.
红血球呈现球状，而不是正常细胞的双凹圆盘状。
In this paper, we put forward biconcave programming problem and generalized concave programming problem more generally.
在本文中，我们提出了双凹规划问题和更一般的广义凹规划问题。
Red blood cell with a biconcave disc shape is to provide a large surface area to volume ratio to facilitate the diffusion of gases.
红血球的双凹面圆盘形可以增加它的表面积，以利气体的扩散。
Red blood cell with a biconcave disc shape is to provide a large surface area to volume ratio to facilitate the diffusion of gases.
红血球的双凹面圆盘形可以增加它的表面积，以利气体的扩散。
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